Solve the given C Puzzle

March 15th, 2010
  • Hi! I am Adithya U,17 year old Engineering Student(IT) from Hassan,Karnataka

    http://farm3.static.flickr.com/2052/2086499468_1f153310e7_o.gif

    Currently you are witnessing C puzzle 12
    The answer to this puzzle will be given soon till i frame another puzzle..



    Don't forget to visit these other threads started by me
    1.Lesser known facts in C (http://www.thinkdigit.com/forum/showthread.php?t=71047):facts that you never knew about C

    2.C in linux/unix (http://www.thinkdigit.com/forum/showthread.php?t=71889):Bored of using TC,switch to linux.All about running C programs in linux/unix

    3.Presenmaker 1.0 (http://www.thinkdigit.com/forum/showthread.php?t=74832):Presenmaker stands for presentation maker. It's a free software developed by me which can be used to create interactive agent animations in seconds. By using Presenmaker you can convert a lengthy text file into agent animation. It is very useful to create interactive presentations, tutorials, to read lengthy lessons etc



    Index
    1.Puzzle 1[#2]
    2.Puzzle 2[#14]
    3.Puzzle 3[#25]
    4.Puzzle 4[#36]
    5.Puzzle 5[#42]
    6.Puzzle 6[#49]
    7.Puzzle 7[#57]
    8.Puzzle 8[#73]
    9.Puzzle 9[#97]
    10.Puzzle 10[#118]
    11.Puzzle 11[#155]
    11.Puzzle 12[#162]



    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i want.


    Here is the 12th C puzzle



    write a c program which gives the output as below..


    Hello!
    Continue(y/n)
    Hello!
    Continue(y/n)
    Bye,press any key to exit

    ^^When i press 'y' the program prints Hello! once more and if i press any other key the program ends

    If i didn't specify the rules then anyone can solve this :D:D

    Rules
    maximum of 2 header files -stdio.h and conio.h
    no variables,constants
    no structures,pointers,user defined functions..
    no looping structure(for ,while,dowhile etc..)
    no goto statement
    the words if and else shouldn't appear in the whole program
    conio.h should be included only for getche() i.e, getch() etc.. are not allowed


    Note :Specify your modified program along with the answer

    Awards gallary:
    Total puzzles solved :11
    anuj919 3
    me (If no one gets the solution then points will be for me) 2
    saurabh kakkar 2
    fun2sh 2
    eggman 1
    nigthtcrawler 1
    a_k_s_h_a_y 1
    anantkhaitan 1
    khattam 1
    maddy354 1

    Leading:anuj919


  • Answer to puzzle 7

    #include
    main()
    {
    char a[1000];
    printf("Enter the stringn");
    gets(a);
    printf("Enter the character whose frequency is to be determinedn");
    scanf("%c",&a[997]);
    a[998]='0';a[999]='0';a[1000]='0';
    for(;a[(a[998]-48)]!='';a[998]++)
    {
    if(a[997]==a[(a[998]-48)])
    a[1000]++;
    }
    a[998]--;
    for(;a[(a[999]-48)]!='';a[999]++)
    {
    if (a[(a[999]-48)]!=a[(a[998]-48)])
    {
    printf("n%s is not a palindromen",a);
    break;
    }
    a[998]--;
    }
    if(a[(a[999]-48)]=='')
    printf("n%s is a palindromen",a);
    for(a[998]='0';a[(a[998]-48)];a[998]++);
    printf("The string "%s" contains %d characters and '%c' occurs %d timesn",a,a[998]-48,a[997],(a[1000]-48));
    }


    confused ??:confused::confused::confused::confused::
    Don't worry.All explanation will be given on next tuesday....

    @offtopic
    HEY ADI also MINE 3rd INTERNAL R GOIN ON!!!
    but me is givin only unix exam coz i got avg of (24-25)/25 in rest subject. i didnt study for unix in 2nd internal coz of illness

    @offtopic
    We have only 2 internals and the marks are added without reduction.Internals is for 20 marks.So 20+20+5(assignments)+5 (teachers wish)=50.The final exam will be condected for 100 marks and will be reduced to 50.
    Sick.isn't it :sad::sad::sad:


    @ontopic
    can we use global variable and this operator ::

    Sorry:( i didn't read this post .I just typed the program and tested and posted it without refreshing the thread....


  • I think it is next to impossible to solve the puzzle 9 without using getch/getche (Which r in "conio.h ") because without it one can't read sentence 'word by word'

    So please can we use getch/getche?


  • ^^Very good :):)
    puzzle 9 solved


    But yes Adithya is true:idea: , the program works fine without including "conio.h"
    & can anyone tell me that how this happens in Turbo C++ 3.0 :confused: :confused:

    ^^I had told this already but nobody believed me :sad::sad:
    Thanks for supporting me...:D:D:D
    New puzzle tommorow at 12:15 PM


    has some settings been change of ur TC++ compiler??
    ^^nope..

    Yeah how does stdio.h cover clrscr as your code example claims so? Use standard code mate, and allow a wider population to join.
    ^^ i will be careful from


  • smiley is just the way to indicate the end....
    It's just like normal char...

    how do u enter smiley after string in cmd prompt ?

    Hitting CTRL+B gives ^B


  • yeah they r seperate group of data structures but they too are based on pointers, so tel me can we use them or not.??


  • confirmed...
    getche() and getch() comes under stdio.h(tested in TC++ 3.0)..
    If you cannot tell ANSI/ISO standard C from a system-dependent implementation (i.e., Turbo C++), you ought to invest more time in learning the language rather than posting non-standard, useless, and tricky puzzles here.


  • C Puzzle 1

    here is a simple c program

    #include
    void main()
    {
    char str[100];
    printf("Enter any stringn");
    scanf("%s",str);
    printf("n You entered string %s n",str);
    }

    The output of the above program is

    Enter any string
    This is a test
    You entered string This

    As you can see the scanf will stop accepting the string as soon as it encounters white space or special chars.
    Now modify the above programs such that the output will be

    Enter any string
    This is a test
    You entered string This is a test

    the rules are
    1.No new variables
    2.You have to use only scanf to accept input
    3.No new header files


    Edited:
    To show the first puzzle as requested by Adi


  • wrong mate.


    1.The keyword if or operator '?' should come only once in a program
    2.No logical operator's are allowed (that means && ! should not be used)
    3.No new variabels must be used
    4.No header file other than the existing one should be used

    Rules Updated


  • can we use this statement

    char *string;

    oh didnt read properly. cant use that statement :sad:

    oh didnt read properly. cant use that statement :sad:


  • hmmm..:confused:
    i created the solution program by using conio.h for clrscr()
    then i removed clrscr() and #include
    then i made some modifications to the solution program and compiled it...
    It worked fine..
    I tested the program by using both getch() and getche() without using conio.h and it worked....:confused::confused:
    wait ..
    I will confirm it later by creating the program from the scratch......


  • EDIT: Problem solved

    Solution for 3rd C Puzzle

    #include
    #include
    void main()
    {
    enum days{
    sunday=1,
    monday,
    tuesday,
    wednesday,
    thursday,
    friday,
    saturday,
    };
    //THIS IS IMP STEP
    days a,b,c,d,e,f,g;
    a=sunday,
    b=monday,
    c=tuesday,
    d=wednesday,
    e=thursday,
    f=friday,
    g=saturday;

    clrscr();
    printf("%dn%dn%dn%dn%dn%dn%dn",a,b,c,d,e,f,g);
    getch();
    }


    OR

    #include
    #include
    void main()
    {
    enum days{
    sunday=1,
    monday,
    tuesday,
    wednesday,
    thursday,
    friday,
    saturday,
    };
    //THIS IS IMP STEP
    days a=sunday,b=monday,c=tuesday,d=wednesday,e=thursday ,f=friday,
    g=saturday;

    clrscr();
    printf("%dn%dn%dn%dn%dn%dn%dn",a,b,c,d,e,f,g);
    getch();
    }


  • There is no separate output and input.The program is dynamic


    I am planning to upload the runtime vedio of the program on monday or tuesday...

    that means that the input and output will be on same line

    It would be nice if u can provide screenshot


  • Here is the solution for 3rd C Puzzle

    #include
    #include
    void main()
    {
    enum days{
    sunday=1,
    monday,
    tuesday,
    wednesday,
    thursday,
    friday,
    saturday,
    };
    enum days a,b,c,d,e,f,g;
    a=sunday,
    b=monday,
    c=tuesday,
    d=wednesday,
    e=thursday,
    f=friday,
    g=saturday;

    clrscr();
    printf("%dn%dn%dn%dn%dn%dn%dn",a,b,c,d,e,f,g);
    getch();
    }


    puzzle solved by saurabh kakkar.But i just think that you have to specify 'enum days' instead of simply days.:confused:
    Did you executed the program saurabh...
    Also a round of applause to piyush gupta who first suggested the use of enum.I just hope that from next puzzle onwards he will suggest the program also.


  • hey can u give more examples of output involvin smiley. i m not gettin wat u want to do with smiley.


  • ^^ i want only program.
    Please specify your modified program along with the answer.

    no responses???:(:(

    i thinks sourabh solved the puzzle...

    hope u will giv eme some credit at least for the idea
    whats next buddy :)


  • u can use arrays.....
    make sure there is no * in the whole program....


    n which functions r not allowed??????????
    user defined functions are not allowed....
    u must make sure that there is only one header file


    Hurry......
    time is running...
    Answer will be given on NOV 23


    Last day to answer the puzzle...
    Will give answer tommorow....
    Looks like i will get the point :D:D


  • Ok. I forgot that part as well. Anyways writing the code again wherin I don't round of the value of the number in floor call. Also made changes to printf statement. The program is running as expected on a Linux box minus getch, clrscr calls and conio.h header files and plus the int return format of main. The change to printf statement was to correct the absurd behaviour in linux box wherin the output was not being printed properly. I think this printf should also work in tc/devc++ or any other win32 C compiler


    #include
    #include
    #include

    void main()
    {
    long double pi=3.14159265,a,r;
    int pre;
    clrscr();
    printf("Enter precision of pi between 0 and 8n");
    scanf("%d",&pre);
    printf("Enter radiusn");
    scanf("%Lf",&r);
    pi = floor(pi *pow(10, pre)) / pow(10, pre); // this will set the precision according to input value
    a = pi * r * r;
    printf("The Value of pi taken is %1.*3$Lf and the area of the circle is %Lfn", pre, pi, a);
    getch();
    }

    The Output

    Enter precision of pi between 0 and 8
    6
    Enter radius
    25.3
    The Value of pi taken is 3.141592 and the area of the circle is 2010.901623

    Enter precision of pi between 0 and 8
    4
    Enter radius
    25.3
    The Value of pi taken is 3.1415 and the area of the circle is 2010.842735

    Enter precision of pi between 0 and 8
    7
    Enter radius
    25.3
    The Value of pi taken is 3.1415926 and the area of the circle is 2010.902007

    I think you will find this correct :)


  • no....,
    it is not taking 27 as a character. it is just taking 2 as char and assigning it to 'a'.Remaining 7 to variable 'b''.The other value to 'c'.The last decimal value is discarded.


  • Hi! I am Adithya U,17 year old Engineering Student(IT) from Hassan,Karnataka

    http://farm3.static.flickr.com/2052/2086499468_1f153310e7_o.gif

    Currently you are witnessing C puzzle 9






    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i want.


    Here is the 9th C puzzle



    this is the same 8th puzzle but there are somes rules..
    Write a c program which gives accepts words and at the end of a word,it will replace the word by it's reverse.This is done until a smiley is encountered.At the end it will print "Have a nice day".That is if i entered i luv c and i think it's rocks :) will give the output as..



    to be more explainable


    Enter the string
    i luv_

    as soon i press space,it will become


    Enter the string
    i vul _



    Rules
    1.No user defined functions..
    2.No usage of clrscr()
    3.No header file other than stdio.h should be used.
    4.No * symbol in the whole program


    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :8
    me (If no one gets the solution then points will be for me) 2
    saurabh kakkar 2
    fun2sh 2
    eggman 1
    nigthtcrawler 1
    anuj919 1
    Leading:saurabh kakkar,fun2sh and myself

    puzzle 9 added thread updated!!


  • Hey I have commented it. So it is not being used if you look closely. Anyways I will remove that part all together.


  • Here is the 2nd C Puzzle

    Here is a simple C program

    #include
    #include
    void main()
    {
    char a;
    int b,c;
    clrscr();
    printf("Enter a character and 2 integer valuesn");
    scanf("%c%b%c",&a,&b,&c);
    getch();
    }



    This is an program which accepts a character followed by 2 integer values.
    NOW ALL I WANT TO DO IN THIS PROGRAM IS TO CHECK WHETHER THE USER HAS ENTERED CORRECT INPUT(FIRST CHARACTER AND FOLLOWED BY THE 2 INTEGER VALUES.
    It should display "That's Good" if the user has inputted in correct sequence else it should display "That's Bad".
    Here are some sample ouput's

    Output:
    Enter a character and 2 integer values
    a 23 45.96
    That's good

    ^^ decimal values are rounded off.Hence it is valid input

    Output:
    Enter a character and 2 integer values
    2 23 45.96
    That's good

    ^^'2' is also a character


    Output:
    Enter a character and 2 integer values
    2 ad 45.96
    That's bad

    ^^ ad is not a decimal value.
    The following are the Rules:


    1.The keyword if or operator '?' should come only once in a program
    2.No logical operator's are allowed (that means && ! should not be used)
    3.No new variabels must be used
    4.No header file other than the existing one should be used


    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :1
    me (If no one gets the solution then points will be for me) 0
    saurabh kakkar 1
    eggman 1

    Leading:saurabh kakkar and eggman
    New puzzle added.Thread updated.

    No responses :( I think either the puzzle is too difficult or i have not made some points clear
    :confused:

    Not even one try:)
    That's bad


  • yeah its dynamic..me to checked it n its reverses the strin as soon as u press a space bar


  • Last day to solve the Puzzle.I will give answer tommorow.
    Look's like i am going to get my first point:D:D:D:D:D:D:D


  • hey != is not a logical operator. its comparetion operator.
    and i hav made this program. will post it as soon i get my laptop. Abhi me admitted in hospital since 17th.

    i an just facin 1 problem in my program.for '27' OR any 2digit no, for first variable its tellin 'GOOD'


  • No other try yet??:confused::confused:

    By the way,how C compiler decides Garbage value in case of dataoverflow
    Find this out in my lesser known facts in c thread.
    http://www.thinkdigit.com/forum/showthread.php?p=655539#post655539


  • Puzzle 5 Solved

    #include
    #include
    void main()
    {
    long signed int a,b;
    clrscr();
    puts("enter the value for a");
    (fscanf(stdin, "%ld", &a));
    puts("enter the value for b");
    (fscanf(stdin, "%ld", &b));
    printf("%ld" "+" "%ld" "=" "%ld"" and ""%ld" "-" "%ld" "=" "%ld",a,b,a+b,a,b,a-b);
    getch();
    }


    I can not provide the output as I m using Turbo C++ compiler


  • example program here
    http://www.thinkdigit.com/forum/showpost.php?p=654017&postcount=21
    yeah seen that.

    During runtime also you have to press CTRL B to enter smiley

    CTRL B gives ^B not a smiley in dos prompt


  • Yeah how does stdio.h cover clrscr as your code example claims so? Use standard code mate, and allow a wider population to join.


  • I have given the soultion already in post no 5 here it goes again


    #include
    void main()
    {
    char str[100];
    printf("Enter any stringn");
    scanf("%[^n]s",str); //<----- Imp step--------
    printf("n You entered string %s n",str);
    }


  • Sorry but it was puzzle no. 8:D
    yeah my bad:D:D:D


  • wat do u mean by
    No pointers,functions,structures,unions......
    then how will one store a string (as arrays are also pointers)
    n which functions r not allowed??????????


  • ^^thanks


  • nightcrawler has solved the puzzle.This was a tough puzzle.I thought that i will get the point myself but it didn't happen.:(:(
    Anyways,a round of applause to nightcrawler
    Linux version of this program is

    #include
    #include
    main()
    {
    long double pi=3.14159265,a,r;
    int pre;
    printf("Enter precision of pi between 0 and 8n");
    scanf("%d",&pre);
    printf("Enter radiusn");
    scanf("%Lf",&r);
    pi = floor(pi *pow(10, pre)) / pow(10, pre);
    a = pi * r * r;
    printf("The Value of pi taken is %.*Lf and the area of the circle is %Lfn", pre, pi, a);
    }


    Note:
    The compilation of this program will sometimes lead to an error
    Then you have to compile this program by suffixing -lm at end of cc command
    i.e,

    cc adi.c -lm

    assuming that adi.c is the filename

    find more about floor function at my Lesser Known Facts in C thread
    http://www.thinkdigit.com/forum/showpost.php?p=652953#post652953






    :!:But there is another method to solve this puzzle without using floor function.So if there is someone other than nightcrawler who know this, then post it here within tommorow.1 point will be given to that person also.
    The other answer will be given tommorow.



    Another method to solve the puzzle without using floor function


    #include
    #include
    #include
    void main()
    {
    long double pi=3.14159265,a,r;
    int pre;
    clrscr();
    printf("Enter precision of pi between 0 and 8n");
    scanf("%d",&pre);
    printf("Enter radiusn");
    scanf("%Lf",&r);
    pi=(long)(pi*pow(10, pre));
    pi=pi/pow(10, pre);
    a = pi * r * r;
    printf("The Value of pi taken is %.*Lf and the area of the circle is %Lfn", pre, pi, a);
    getch();
    }





    printf("The Value of pi taken is %.*Lf and the area of the circle is %Lfn", pre, pi, a);

    ^^
    More info about this statement at my Lesser known facts in C thread
    http://www.thinkdigit.com/forum/showthread.php?p=652971#post652971



    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i wan.

    Here is the 5th C puzzle

    Write a c program which gives the output as

    Enter the value of a
    4561256
    Enter the value of b
    6565665
    4561256+6565665= 11126921 and 4561256-6565665= -2004409


    If i don't specify the rules than anyone can solve this.:D:D:D
    The rules are


    1.Only 2 variables are allowed
    2.scanf is not allowed
    3.only one printf is allowed
    4.the symbol '&' shouldn't come in the program
    5.No escape sequence is allowed(n,t, .....)


    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :4
    me (If no one gets the solution then points will be for me) 0
    saurabh kakkar 2
    eggman 1
    fun2sh 1
    nigthtcrawler 1
    Leading:saurabh kakkar
    Puzzle 5 added! Thread updated


  • I will give it a try if no one knows...but saurabh_kakkar has almost figured it out i think.


  • ^^ please rewrite the program in other post along with the output's and please no comments

    :!:nightcrawl attention please:
    I have compiled your c program and the following is the output of your c program:


    Enter precision of pi between 0 and 8
    6
    Enter radius
    25.3
    The Value of pi taken is 3.141593 and the area of the circle is 2010.902263


    But i have stated that

    pre - radius - pi value taken - Area
    0 - 25.3 - 3 - 1920.270000
    1 - 25.3 - 3.1 - 1984.279000
    2 - 25.3 - 3.14 - 2009.882600
    3 - 25.3 - 3.141 - 2010.522690
    4 - 25.3 - 3.1415 - 2010.842735
    5 - 25.3 - 3.14159 - 2010.900343
    6 - 25.3 - 3.141592 - 2010.901623
    7 - 25.3 - 3.1415926 - 2010.902007
    8 - 25.3 - 3.14159265 - 2010.902039


    so your output should be like this


    Enter precision of pi between 0 and 8
    6
    Enter radius
    25.3
    The Value of pi taken is 3.141592 and the area of the circle is 2010.901623


    means no round off should takes place

    Your c program is making roundoff for 4,6,7 values of precesion


  • are bhai why u givin same program now!!!!

    waise now one question can we use strtok() function n gotoxy() function???


  • that wat i was askin!!!

    u can use a global variable usin :: operator

    forexample 'a' is a global variable n local to
    so
    'a' will mean local
    while
    ::a wil mean global


  • confirmed...
    getche() and getch() comes under stdio.h(tested in TC++ 3.0)..


  • last day for the answers.Tommorow i will post solution.


  • well done sykora,saurabh,and yamaraj.You are the chamions.


  • ^^no


  • @offtopic
    HEY ADI also MINE 3rd INTERNAL R GOIN ON!!!
    but me is givin only unix exam coz i got avg of (24-25)/25 in rest subject. i didnt study for unix in 2nd internal coz of illness


    @ontopic

    can we use global variable and this operator ::


  • hey! where r my points???


  • ^^ Read man.... he says no use of anything other than scaf... why though?


  • program compiled and checked ..
    it works..
    1 point to anuj919


  • Only 1 variable but constants are allowed as desired?


  • Answer to puzzle5.It's really surprise that no one was able to solve this puzzle which was there for a week.
    The program hint is given by the rule that no & must be used.That means we have to use string.And use a function to convert the value stored by the string into int or long type....
    Here is the program.......


    #include
    #include
    void main()
    {
    char a[10],b[10];
    puts("Enter the value of a");
    gets(a);
    puts("Enter the value of b");
    gets(b);
    printf("%s+%s=%ld and %s-%s=%ld",a,b,(atol(a)+atol(b)),a,b,(atol(a)-atol(b)));
    getch();
    }


    I have opened my account :D:D:D:D:D:D

    what is atol()???:confused::confused:
    find this out at my lesser known facts in C thread
    http://www.thinkdigit.com/forum/showthread.php?goto=lastpost&t=71047

    Hi! I am Adithya U,17 year old Engineering Student(IT) from Hassan,Karnataka

    Currently you are witnessing C puzzle 6






    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i want.


    Here is the 6th C puzzle


    Write a c program which gives the output as

    Enter the string
    adithya
    Start

    a
    d
    i
    t
    h
    y
    a

    End



    Enter the string
    adi 007
    Start

    a
    d
    i

    0
    0
    7

    End


    If i don't specify the rules than anyone can solve this.:D:D:D
    The rules are


    1.Only 2 variables are allowed
    2.No header file other than stdio.h is allowed.
    3.gets should be used for input.
    4.Only printf should be used for output(That means puts,putch,... not allowed)
    5.No escape sequences or backslash characters are allowed(n,t, .....)
    6.Only one for loop is allowed.
    while,do while, if and it's variants,?.. <---not allowed
    7.The printf statement should not be blank
    i.e,

    printf(" ");

    ^^not allowed


    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :5
    me (If no one gets the solution then points will be for me) 1
    saurabh kakkar 2
    eggman 1
    fun2sh 1
    nigthtcrawler 1
    Leading:saurabh kakkar



    Puzzle 6 added!!Thread updated!!


  • no...
    smiley means smiley[:)] not this -->:)
    read this http://www.thinkdigit.com/forum/showpost.php?p=654017&postcount=21


    Believe me it's not so easy...:D:D:D
    I hav done revesing the string.

    Clarify some points:

    Will there be upper bound to the length of the string ? or link list will be used ?
    And that smiley thing will be ASCII code or a real jpeg file ?

    I really dont like C :D:D:D, here is the bad code, someone can refine it further (I hav forgotten a lots of things in C):


    #include
    #include

    int recReverse( char *tempStrPtr )
    {
    int finalInt;

    if (tempStrPtr == NULL)
    finalInt = 0;
    else if (*tempStrPtr == '')
    finalInt = 0;
    else if (*tempStrPtr == ' ')
    finalInt = 0;
    else
    finalInt = recReverse(tempStrPtr+1)+1;

    if(finalInt)
    putchar(*tempStrPtr);
    return finalInt;
    }


    int main ( )
    {
    char initStrPtr[20],*finalStrPtr;
    int size=0;

    gets(initStrPtr);

    finalStrPtr=initStrPtr;

    int incr=0;

    while(finalStrPtr && *finalStrPtr)
    {
    incr = recReverse(finalStrPtr);
    finalStrPtr += incr;

    if(*finalStrPtr==' ')
    {
    putchar(' ');
    finalStrPtr++;
    }
    }
    return 0;
    }


    The Output, with stack overflow:


    jit@jit-desktop:~$ ./a.out
    i love c and i think it rocks
    *** stack smashing detected ***: ./a.out terminated
    i evol c dna i kniht ti skcorAborted (core dumped)

    The Bad:
    1) This thing will overflow like hell
    2) gets() is a dangerous escape
    3) No smiley return


    to be more explainable

    Code:
    Enter the string
    i luv_

    as soon i press space,it will become // you hav already pressed spacwe before, how will the program know that this space is the end

    Code:
    Enter the string
    i vul _


  • following Program will work :)


    #include
    void main()
    {
    char str[100];
    printf("Enter any stringn");
    scanf("%[^n]s",str); //<----- Imp step--------
    printf("n You entered string %s n",str);
    }


  • Puzzle 6 solved

    #include
    #include
    void main()
    {
    clrscr();
    char *a;
    printf("enter a string %c",10); // ascii value of 'n' is 10
    gets(a);
    printf("%cStart%c",10,10);
    for(;*a!='';a++)
    {
    printf("%c%c",*a,10);
    }
    printf("%cEnd",10);
    getch();
    }


    I have solved this puzzle only with single variable


  • wat if the smiley appears in th mid like this
    i luv digit forum :) but i hate spamer

    do u expect output like
    i vul tigid murof


  • good info fun2sh..Didn't knew this
    please post it in the lesser known facts in c thread ....

    Hi! I am Adithya U,17 year old Engineering Student(IT) from Hassan,Karnataka

    Currently you are witnessing C puzzle 8


    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i want.


    Here is the 8th C puzzle

    Write a c program which gives accepts words and at the end of a word,it will replace the word by it's reverse.This is done until a smiley is encountered.At the end it will print "Have a nice day".That is if i entered i luv c and i think it's rocks :) will give the output as..


    Enter the string
    i vul c dna i kniht s'ti skcor :)
    Have a nice day


    to be more explainable


    Enter the string
    i luv_

    as soon i press space,it will become


    Enter the string
    i vul _


    There are no rules for this puzzle

    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :7
    me (If no one gets the solution then points will be for me) 2
    saurabh kakkar 2
    fun2sh 2
    eggman 1
    nigthtcrawler 1
    Leading:saurabh kakkar,fun2sh and myself

    puzzle 8 added!Thread updated


  • I think it is next to impossible to solve the puzzle 9 without using getch/getche (Which r in "conio.h ") because without it one can't read sentence 'word by word'

    So please can we use getch/getche?
    what....:shock::shock::shock:
    getch() and getche() comes under stdio.h :confused::confused:
    wait let me confirm it.....


  • smiley is just the way to indicate the end....
    It's just like normal char...


  • ^^Sorry:confused: typing mistake it is '!' not '!=''.


    i an just facin 1 problem in my program.for '27' OR any 2digit no, for first variable its tellin 'GOOD'
    That's Ok.Because it depends upon the computer and the compiler.In my home i use linux and i have extracted the output from it.After trying this in TurboC++,i faced the same problem as you.Actually what's happening is it taking only a single character from 27 and assigning it to char a.The remaining '7' is assigned to int b and the next decimal number is assigned to int c.And the last number is discarded.
    So,I have removed this output




    Output:
    Enter a character and 2 integer values
    27 23 45.96
    That's bad

    ^^27 is not a character


    No need to satisfy this condition:!::!::!:

    I hope now everything is clear :confused:

    Sorry:(:(I think i made a mess of this puzzle


  • ...
    Unfortunately, i couldn't give point to him since he answered lately.


    Dude this is not done U should award me also cos I did'nt knew at that time that puzzle 6 has been put

    and from next time onwards plz mention the date nd Time at which u will post new puzzle :)

    by the way I m very busy with my studies so May be i will not be able to participate :(

    regards
    saurabh kakkar


  • Only 1 variable but constants are allowed as desired?
    no constants...

    wat do u mean by

    then how will one store a string (as arrays are also pointers)
    n which functions r not allowed??????????
    arrays are not pointers..
    There are the separate group of structured datatype..


  • is that really possible?


  • #include
    int main() {
    char str[100], c;
    int i = 0;
    printf("Enter any stringn");
    do {
    scanf("%c", &c);
    str[i++] = c;
    } while (c != 'n' && i < 99);
    str[i] = ''
    printf("n You entered string %s n",str);
    return 0;
    }


    EDIT : changed to &&.


  • i think the answer given by anuj919 is wrong....
    Not yet compiled and checked ...
    But i think what the program is doing is accept the string and then clear the screen and then print the reverse of the string.This is wrong because I said the program is dynamic.....
    Anyways ,I have prepared the animated gif run time output,will post it tommorow......

    no its reversing the word as soon as u press space, its dynamic.

    I dunno wat else can be dynamic other than that ?


  • ^^ Correct.


  • confirmed...
    getche() and getch() comes under stdio.h(tested in TC++ 3.0)..
    no adi. it cant be!:shocked: i checked it again now n its comes in conio.h only!!n i hav the same tc as urs. even in the help file of tc its mentioned conio.h!!


  • ^^will that means that you know the answer.If so,please do give the answer.


    :!::!::!:
    I can not provide the output as I m using Turbo C++ compiler

    How to save the output to a text file in TC++,find this out in my lesser known facts in c thread
    http://www.thinkdigit.com/forum/showthread.php?goto=lastpost&t=71047


  • [QUOTE=adi007]Here is the 2nd C Puzzle

    Here is a simple C program

    #include
    #include
    void main()
    {
    char a;
    int b,c;
    clrscr();
    printf("Enter a character and 2 integer valuesn");
    scanf("%c%b%c",&a,&b,&c);
    getch();
    }



    This is an program which accepts a character followed by 2 integer values.
    NOW ALL I WANT TO DO IN THIS PROGRAM IS TO CHECK WHETHER THE USER HAS ENTERED CORRECT INPUT(FIRST CHARACTER AND FOLLOWED BY THE 2 INTEGER VALUES.
    It should display "That's Good" if the user has inputted in correct sequence else it should display "That's Bad".
    Here are some sample ouput's

    sorry for late responce m very busy :(
    I can solve this Program using ctype.h header file if thats the way to solve thats fine :) if not plz post the answer urself :)


  • Until :) is typed in.
    no...
    smiley means smiley[:)] not this -->:)
    read this http://www.thinkdigit.com/forum/showpost.php?p=654017&postcount=21

    its easy man, may be if i'll get time will post here

    Common interview question.

    Btw am not a C fanatic
    Believe me it's not so easy...:D:D:D


  • yeah thats correct :D It was puzzle no 7.


    Sorry but it was puzzle no. 8:D


  • here is th solution thaen

    #include
    #include
    void main()
    {
    char a;
    float b,c;
    clrscr();
    printf("Enter a character and 2 integer valuesn");
    b=scanf("%c %f %f",&a,&b,&c);
    if(b!=3)
    printf("n thats bad");
    else
    printf("n thats good");
    getch();

    }


  • ^^ Read man.... he says no use of anything other than scaf... why though?
    Thats the puzzle......


  • Under Turbo stuff, getch() comes in conio.h


  • wat if the smiley appears in th mid like this


    do u expect output like
    noooo....
    As soon as the smiley encounters the program should end by displaying

    Have a nice day

    and the main thing is
    There is no separate output and input.The program is dynamic

    yeah seen that.

    During runtime also you have to press CTRL B to enter smiley

    CTRL B gives ^B not a smiley in dos prompt
    I am planning to upload the runtime vedio of the program on monday or tuesday...


  • So what have come out all your discussion
    Can we use getch/getche or not?


  • thats real EASY

    HERE ITS IS :mrgreen:


    #include
    #include
    void main()
    {clrscr();
    char *s;
    int i;
    printf("%c enter the string :",10);
    gets(s);
    printf("Start %c%c",10,10);
    for(i=0;*(s+i)!=NULL;i++)
    {printf("%c%c",*(s+i),10);
    }
    printf("%cEnd",10);
    getch();
    }


    HAHAHAHAHAHA!!!!!!!!!!!!!


  • [B]
    The answer to this puzzle will be given on Nov 5 if no one solves the puzzle


    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i wan.

    Here is the 4th C Puzzle[A bit complicated one]

    Here is a C program to find the area of the circle

    #include
    #include
    #include
    void main()
    {
    long double pi=3.14159265,a,r;
    int pre;
    clrscr();
    printf("Enter precision of pi between 0 and 8n");
    scanf("%d",&pre);
    printf("Enter radiusn");
    scanf("%Lf",&r);
    /*Complete the program*/
    getch();
    }


    NOW ALL I WANT YOU TO DO IN THIS PROGRAM IS TO COMPLETE PROGRAM SO THAT IT MACTHES THE OUTPUT.


    Enter precision of pi between 0 and 8
    3
    Enter radius
    25.3
    The value of pi taken=3.141 and the area of the circle is 2010.522690

    I hope you have understood the purpose of the program i.e,calculate the area of the circle by taking value of pi upto certain decimal point
    :!:
    There is another important point that i wished to specify i.e,
    The output should be like this

    The value of pi taken=3.141 and the area of the circle is 2010.522690

    but not this

    The value of pi taken=3.141000 and the area of the circle is 2010.522690



    Similarly,for various value of precision the ouput should be

    pre - radius - pi value taken - Area
    0 - 25.3 - 3 - 1920.270000
    1 - 25.3 - 3.1 - 1984.279000
    2 - 25.3 - 3.14 - 2009.882600
    3 - 25.3 - 3.141 - 2010.522690
    4 - 25.3 - 3.1415 - 2010.842735
    5 - 25.3 - 3.14159 - 2010.900343
    6 - 25.3 - 3.141592 - 2010.901623
    7 - 25.3 - 3.1415926 - 2010.902007
    8 - 25.3 - 3.14159265 - 2010.902039



    The following are the Rules:


    1.If and it's variants,switch,?,for,while,do..while,goto -->not allowed
    2.No new variables
    3.No new header file other than math.h,conio.h,stdio.h


    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :3
    me (If no one gets the solution then points will be for me) 0
    saurabh kakkar 2
    eggman 1
    fun2sh 1

    Leading:saurabh kakkar
    Puzzle 4 added.Thread Updated!!.
    I had to write this twice because after writing once i clicked save and it asked my password and username,I specifed it but it just got discarded:(:(

    Please rate this thread!!


  • Until :) is typed in.


  • Hey I am also a student in 1st year in Gujarat & new in this puzzle

    I have done puzzle 8

    Here is the Solution...



    #include
    #include

    //Function to return the reverse the string given as argument

    char *str_rev(char str[100])
    {
    char rev[100];
    int i,j;
    for(i=0;str[i]!='';i++);
    i--;
    for(j=0;i>=0;i--)
    {
    rev[j++]=str[i];
    }
    rev[j]='';
    return rev;
    }


    void main()
    {
    char a[100][100],c; // a is two dimentional array to store diffrent strings
    // c is temp variable

    int i=0,j=0,k=0; // i is for i th string entered
    // j is for j th letter of i th string

    clrscr();
    printf("Enter String n");
    while((c=getche())!=':)') //:)=Ctrl+B
    {
    if(c!=' ')
    {
    a[i][j++]=c; //If space is not entered put char at the end of i th word (i.e,a[i])
    }
    else
    {
    a[i][j]=''; //If space is entered put null character at the end of i th word
    i++;j=0;k=0; // increment no of words & make j=0 for next use

    //Now first clear the screen & start printing all the strings reversed

    clrscr();
    printf("Enter String n");
    while(k {
    printf("%s ",str_rev(a[k]));
    k++;
    }
    }
    }

    //After smily print string in new line

    printf("nHave a Nice Day");
    getch();
    }


    :D:D:D


  • Um. . 27 is a ASCII Code. 65 is for A, so if you do printf("%c", 65); it prints out 'A'.

    Thats the reason why its taking 27 as a character.

    http://www.devlist.com/Default.aspx


  • i just think that you have to specify 'enum days' instead of simply days.:confused:

    No buddy there is no need to spectify 'enum days' :)


    Did you executed the program saurabh...


    Yes, before posting any c++ program I make sure to compile the program but since I use TurboC++ compiler so i can not paste the output :D


  • Dude this is not done U should award me also cos I did'nt knew at that time that puzzle 6 has been put

    sorry:(:(:(:(
    But i am helpless


    and from next time onwards plz mention the date nd Time at which u will post new puzzle :)

    ^^I will implement this

    by the way I m very busy with my studies so May be i will not be able to participate :(

    That really sad:sad::sad:

    puzzle 7 Schedule
    Date:Nov16
    Time:12:15 PM
    Venue:this same thread:D:D:D

    Hi! I am Adithya U,17 year old Engineering Student(IT) from Hassan,Karnataka

    Currently you are witnessing C puzzle 7






    First,let me state the rules in this thread:
    1.Please do not give suggestions or hints.Specify the modified program only.
    2.Before posting the program make sure it's working in the way i want.


    Here is the 7th C puzzle


    Write a c program which gives the output as

    Enter the string
    adithya
    Enter the character whose frequency is to be determined
    a

    adithya is not a palindrome
    The string "adithya" contains 7 characters and 'a' occurs 2 times



    Enter the string
    madam
    Enter the character whose frequency is to be determined
    e

    madam is a palindrome
    The string "madam" contains 5 characters and 'e' occurs 0 times



    Enter the string
    malayalam malayalam
    Enter the character whose frequency is to be determined
    m

    malayalam malayalam is a palindrome
    The string "malayalam malayalam" contains 19 characters and 'm' occurs 4 times

    If i don't specify the rules than anyone can solve this.:D:D:D
    The rules are


    1.Only 1 variable is allowed
    2.No header file other than stdio.h is allowed.
    3.Only printf should be used for output(That means puts,putch,... not allowed)
    4.No pointers,functions,structures,unions......
    5.getche(),getch(),getchar()... not allowed


    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :6
    me (If no one gets the solution then points will be for me) 1
    saurabh kakkar 2
    fun2sh 2
    eggman 1
    nigthtcrawler 1
    Leading:saurabh kakkar and fun2sh

    puzzle 7 added!!.Thread updated


  • example program here
    http://www.thinkdigit.com/forum/showpost.php?p=654017&postcount=21


  • i think saurabh kakkar is 100% correct.that's the right way to do it.

    @Sykora is also correct but do while make this simple problem complex & complexity also higher than saurabh .

    My vote goes to saurabh .


  • wat do mean by "until a smiley is encountered" ??


  • He meant creating just strings using arrays and one's not allowed to create a sub-routine to process things.


  • Great thread @ Adi


  • #include
    int main() {
    char str[100], c;
    int i = 0;
    printf("Enter any stringn");
    do {
    scanf("%c", &c);
    str[i++] = c;
    } while (c != 'n' && i < 99);
    str[i] = ''
    printf("n You entered string %s n",str);
    return 0;
    }


    ^^ You have used new variables called 'c' 'i'. I told to modify the existing program.

    So the winner is saurabh kakkar and eggman(Because he suggested the use of Edit set)

    Well you can use Edit Set [...] instead of %s in the scanf function.....it'll solve the problem....
    From next puzzle ,specify modified program also.


  • wel i was also doin this but usin a global variable, coz global variable is different from local 1. so i can use same name for both hence only one variable name is required.
    but wat if i give a string greater than 1000 chars???
    se usin global variable this wont be a problem as we can use locale to store the string while global to do the things u hav done.


  • I program suggested by saurabh will give the output like this

    0
    1
    2
    3
    4
    5
    6

    make some modifications..


  • its easy man, may be if i'll get time will post here

    Common interview question.

    Btw am not a C fanatic


  • i think the answer given by anuj919 is wrong....
    Not yet compiled and checked ...
    But i think what the program is doing is accept the string and then clear the screen and then print the reverse of the string.This is wrong because I said the program is dynamic.....
    Anyways ,I have prepared the animated gif run time output,will post it tommorow......


  • ^^No saurab.Glance the rules carefully.

    4.the symbol '&' shouldn't come in the program

    where as you have used it twice

    (fscanf(stdin, "%ld", &a));
    (fscanf(stdin, "%ld", &b));


  • What is there to confirm? You should not have skipped studying the C Standard Library while you were busy mastering the syntax.

    Non-standard and system/implementation dependent functions like getch(), getche() or clrscr() CANNOT reside in a standard header like stdio.h.


  • to nightcrawler :
    I just said to complete the statements after.That means you are not allowed to edit or add any statements before.

    And secondly,you have used '?' operator which i said you shouldn't

    /**precision > 8? *precision=8:(*precision < 0? *precision=0:;);*/ /* Commented because of if not allowed rule function call useless*/


    1.If and it's variants,switch,?,for,while,do..while,goto -->not allowed


    If anyone wants to try, try today itself because I will give the answer tommorow.


  • ^^ i want only program.
    Please specify your modified program along with the answer.

    no responses???:(:(


  • #include

    #define MAXLEN 100

    int main() {
    char str[MAXLEN], c;
    int i = 0;
    printf("Enter any stringn");
    do {
    scanf("%c", &c);
    str[i++] = c;
    } while (c != 'n' i < (MAXLEN-1)); /* Use && */
    str[i] = '';
    printf("n You entered string %s n",str);
    return 0;
    }

    There is a little logic error here. You should have used AND in stead of OR. And, use of magic numbers should be discouraged.


  • I think 1000 is far more than sufficent for a string.....
    If u declare a global and local variable with the same name then preference will be given to local variable.....
    SO HOW CAN U USE BOTH OF THEM IF THEY ARE OF SAME NAME???:confused:


  • ^^^strange???

    has some settings been change of ur TC++ compiler??


  • hi all,

    i found website that gives money for solving puzzles:cool: ;) , please help me in solving them :confused: :confused: :confused: . the website is www.jadook.com (http://www.jadook.com)

    i know that you are very skilled puzzles solvers, plz help.


  • Enumerations are defined much like structures. An example definition is as follows:

    enum coin { ten_cent, quart_doll, half_doll, dollar };
    An example declaration is:

    enum coin money;
    Given this definition and declaration, the following statements are valid:

    money = quart_doll;

    if(money == quart_doll)
    printf("is 25 centsn");
    In an enumeration, each symbol stands for an integer value. For example, using the above definition and declaration:

    printf("%d %d", ten_cent, dollar);
    displays 0 3 on the screen.



    i thinks using them your puzzle can be solved easily...

    i last worked on C in 2001 its long time and I cant write exact code here now...


  • ^^ sorry dude I made mistake in hurry :( .here is the correct solution

    #include
    #include
    void main()
    {
    enum days{
    sunday=1,
    monday,
    tuesday,
    wednesday,
    thursday,
    friday,
    saturday,
    };
    //THIS IS IMP STEP
    days a,b,c,d,e,f,g;
    a=sunday,
    b=monday,
    c=tuesday,
    d=wednesday,
    e=thursday,
    f=friday,
    g=saturday;

    clrscr();
    printf("%dn%dn%dn%dn%dn%dn%dn",a,b,c,d,e,f,g);
    getch();
    }


    OR

    #include
    #include
    void main()
    {
    enum days{
    sunday=1,
    monday,
    tuesday,
    wednesday,
    thursday,
    friday,
    saturday,
    };
    //THIS IS IMP STEP
    days a=sunday,b=monday,c=tuesday,d=wednesday,e=thursday ,f=friday,
    g=saturday;

    clrscr();
    printf("%dn%dn%dn%dn%dn%dn%dn",a,b,c,d,e,f,g);
    getch();
    }


  • I accept my fault....
    I am extermely sorry for the mistake...
    I referred the help documentation and some books and found that getch() ,getche() comes under conio.h...
    So rules are modified
    One can use getch(),getche() but must not use clrscr()
    here are the modified rules


    Rules
    1.No user defined functions..
    2.No usage of clrscr()
    3.No header file other than stdio.h and conio.h should be used.
    4.No * symbol in the whole program


    Now i let me explain why i commited such a big mistake..

    I am using TC++ 3.0 for the past 3 years and have never used conio.h for getch() and getche().:shock:So i thought these 2 comes under stdio.h
    The following program works fine in my TC


    #include
    void main()
    {
    clrscr();
    printf("Press any keyn");
    getche();
    getch();
    }


    and even this works fine

    void main()
    {
    clrscr();
    printf("Press any keyn");
    getche();
    getch();
    }


    I have made the vedio file and will upload and give the link within this week...


  • ^^

    :-d

    :-D


  • Ok ...
    I am very very sorry that i asked such a simple puzzle :sad::sad: .fun2sh solved it on that day itself.The main problem while giving puzzles is u will not know whether the puzzle u asked is easy or not :confused::confused:. Whether the fact u know are known by others or not:confused::confused:.Normally ,i will ask my freinds the puzzle and if there are unable to answer then only i post the puzzle.

    fun2sh has solved the puzzle.One point for him.

    saurabh kakkar has given other possibility that could solve the puzzle by using only one variable.A big applause to him.Unfortunately, i couldn't give point to him since he answered lately.

    New puzzle tommorow.I just hope that the puzzle is of high standard.....


  • 1.This program cannot be solved in Linux.Because u will not get a smiley in linux.You will get the smiley in TC.
    2.There is no seperate input and output.The program is dynamic.


    to be more explainable

    Code:
    Enter the string
    i luv_

    as soon i press space,it will become // you hav already pressed spacwe before, how will the program know that this space is the end

    Code:
    Enter the string
    i vul _
    ^^underscore represents the cursor position

    I hav done revesing the string.

    Clarify some points:
    And that smiley thing will be ASCII code or a real jpeg file ?

    use CTRL B in TC editor and u will see yourself....


    Will there be upper bound to the length of the string ?

    ^^yes


  • Puzzle 4 added.Thread Updated!!.
    I had to write this twice because after writing once i clicked save and it asked my password and username,I specifed it but it just got discarded:(:(

    Please rate this thread!!

    Since no one has answered the question I will give my try. I hope it is correct

    the question is


    The question

    #include
    #include
    #include
    void main()
    {
    long double pi=3.14159265,a,r;
    int pre;
    clrscr();
    printf("Enter precision of pi between 0 and 8n");
    scanf("%d",&pre);
    printf("Enter radiusn");
    scanf("%Lf",&r);
    /*Complete the program*/
    getch();
    }

    Output
    Enter precision of pi between 0 and 8
    3
    Enter radius
    25.3
    The value of pi taken=3.141 and the area of the circle is 2010.522690

    The Possible Answer

    #include
    #include
    #include

    void main()
    {
    long double pi=3.14159265,a,r;
    int pre;
    clrscr();
    printf("Enter precision of pi between 0 and 8n");
    scanf("%d",&pre);
    printf("Enter radiusn");
    scanf("%Lf",&r);
    pi = floor(pi *pow(10, pre) + 0.5) / pow(10, pre); // this will set the precision according to input value
    a = pi * r * r;
    printf("The Value of pi taken is %.*1$Lf and the area of the circle is %Lfn", pre, pi, a); /* .*1$ will take the precision value after the decimal from the first argument of the printf which should be an int which is pre */
    getch();
    }

    EDIT: Made changes to the code. Complies with the requirement now I think.


  • Here is the solution for puzzle2


    #include
    #include
    void main()
    {
    char a;
    int b,c;
    clrscr();
    printf("Enter a character and 2 integer valuesn");
    if (scanf("%c %d %d",&a,&b,&c)==3)
    printf("n thats good");
    else
    printf("n thats bad");
    getch();
    }


    Find more info about this at my lesser known C facts thread http://www.thinkdigit.com/forum/showthread.php?p=640073#post640073

    the answer given by fun2sh is similar to it.So the point goes to fun2sh.

    Here is the 3rd C Puzzle

    Here is a simple C program

    #include
    #include
    void main()
    {
    /*Complete the declartions*/
    clrscr();
    a=sunday;
    b=monday;
    c=tuesday;
    d=wednesday;
    e=thursday;
    f=friday;
    g=saturday;
    printf("%d/n%d/n%d/n%d/n%d/n%d/n%d/n",a,b,c,d,e,f,g);
    getch();
    }


    NOW ALL I WANT YOU TO DO IN THIS PROGRAM IS TO COMPLETE DECLARATIONS SO THAT IT MACTHES THE OUTPUT.


    Output:
    1
    2
    3
    4
    5
    6
    7


    The following are the Rules:


    1.sunday,monday,tuesday,wednesday,thursday,friday, saturday etc are not varibles nor constants.Means

    int sunday=1;
    or
    #define sunday 1

    are not allowed

    2.a,b,c,d,e,f,g are not of int datatype

    int a;

    ^^ not allowed



    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :2
    me (If no one gets the solution then points will be for me) 0
    saurabh kakkar 1
    eggman 1
    fun2sh 1

    Leading:saurabh kakkar ,eggman,fun2sh
    Puzzle 3 added.Thread updated


  • I got the answer again:D :D :D :D


    But yes Adithya is true:idea: , the program works fine without including "conio.h"
    & can anyone tell me that how this happens in Turbo C++ 3.0 :confused: :confused:

    Here is the answer:

    #include
    #include

    void main()
    {
    char b[999];
    int i=0,j=0;
    char c;

    printf("Enter the Stringn");
    while((c=getche())!='')
    {
    if(c==' ')
    {
    for(j=0;j<=i;j++)
    printf("b");
    for(j=i-1;j>=0;j--)
    printf("%c",b[j]);
    printf(" ");
    i=0;
    }
    else
    b[i++]=c;
    }
    printf("nHave a Nice Day!");
    getch();
    }


  • answer will given on next tuesday

    (i have internals for the next 3 days :(:( and the answer program needs a lot of explanation).So,Three days extra time

    EDIT:Answer in #69.Explanation and logic on next tuesday(Nov27).....


  • yeah ur puzzle was toooooo simple this time. a child play i say. but U R DOIN A GREAT JOB BUDDY.


  • you can use enum data type.
    enum
    {
    sunday
    monday
    tuesday;
    wednesday;
    thursday;
    friday;
    saturday;
    }weekdays

    then you can decalre:
    a,b,c,d,e,f,g of type weekdays

    this will resolve the problem.

    Here is the 3rd C Puzzle

    Here is a simple C program

    #include
    #include
    void main()
    {
    /*Complete the declartions*/
    clrscr();
    a=sunday;
    b=monday;
    c=tuesday;
    d=wednesday;
    e=thursday;
    f=friday;
    g=saturday;
    printf("%d/n%d/n%d/n%d/n%d/n%d/n%d/n",a,b,c,d,e,f,g);
    getch();
    }


    NOW ALL I WANT YOU TO DO IN THIS PROGRAM IS TO COMPLETE DECLARATIONS SO THAT IT MACTHES THE OUTPUT.


    Output:
    1
    2
    3
    4
    5
    6
    7


    The following are the Rules:


    1.sunday,monday,tuesday,wednesday,thursday,friday, saturday etc are not varibles nor constants.Means

    int sunday=1;
    or
    #define sunday 1

    are not allowed

    2.a,b,c,d,e,f,g are not of int datatype

    int a;

    ^^ not allowed



    Note :Specify your modified program along with the answer

    Awards gallary:
    Puzzles solved :2
    me (If no one gets the solution then points will be for me) 0
    saurabh kakkar 1
    eggman 1
    fun2sh 1

    Leading:saurabh kakkar ,eggman,fun2sh


  • yeah thats correct :D It was puzzle no 7.


  • Well you can use Edit Set [...] instead of %s in the scanf function.....it'll solve the problem....


  • wat do u mean by
    No pointers,functions,structures,unions......
    then how will one store a string (as arrays are also pointers)
    n which functions r not allowed??????????


  • i will post the gif file or link to runtime vedio on Tuseday(@offtopic :I am going to release my software presenmaker(beta) on that day.:D:D:D...)
    Date for the puzzle 8 has been extended till next Thursday...







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