Very short code tt never work...please help

This is a discussion on Very short code tt never work...please help within the C Programming forums, part of the General Programming Boards category; The code looks like this (got this from dev++ C tutorial): Code: #include <stdio.h> main () { int num1, num2; ...

  1. #1
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    Very short code tt never work...please help

    The code looks like this (got this from dev++ C tutorial):
    Code:
    #include <stdio.h>
    
    main ()
    {
    int num1, num2;
    
    printf("\nEnter first number ");
    scanf("%d",&num1);
    
    printf("\nEnter second number ");
    scanf("%d",&num2);
    
    if (num2 ==0) printf("\n\nCannot devide by zero\n\n");
    else printf("\n\nAnswer is %d\n\n",num1/num2);
    
    }
    The problem is after the prog prompt me for the second no, and after I enter and hit the 'Enter' key, the whole program disappears - failing to print either the statements, "Cannot devide by zero" or "Answer is...".

    Tried different compiler like Borland and also replacing scanf with getchar - and still get the same thing. Wat is wrong???

    Thanks a zillion for your help.

  2. #2
    cwr
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  3. #3
    Awesomefaceradcore bivhitscar's Avatar
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    Try this:

    Code:
    #include <stdio.h>
    
    int main ()
    {
    int num1, num2;
    
    printf("\nEnter first number ");
    scanf("%d",&num1);
    
    printf("\nEnter second number ");
    scanf("%d",&num2);
    
    if (num2 ==0) printf("\n\nCannot devide by zero\n\n");
    else printf("\n\nAnswer is %d\n\n",num1/num2);
    
    system("PAUSE");
    return 0;
    }

    [EDIT]


    Dammit, I always forget that the FAQ knows all.
    it's ironic considerate rarity patron of love higher knowledge engulfs me...

  4. #4
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    reply

    try this.

    Code:
    #include <stdio.h>
    #include <conio.h>
    
    main ()
    {
    int num1, num2;
    
    printf("\nEnter first number ");
    scanf("%d",&num1);
    
    printf("\nEnter second number ");
    scanf("%d",&num2);
    
    if (num2 ==0) printf("\n\nCannot devide by zero\n\n");
    else printf("\n\nAnswer is %d\n\n",num1/num2);
    
    getch();
    }
    I think that your console is not visible because you are not returning nothing to os.

    this code works fine in turbo c++ 4.5 without any problem.

  5. #5
    Registered User whiteflags's Avatar
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    Wow. People, the only time the program pauses really is for input. So PLEASE use a standard function for input like getchar(). Then your program pauses and you don't even need to include an extra library.

  6. #6
    Code Goddess Prelude's Avatar
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    >Dammit, I always forget that the FAQ knows all.
    The FAQ even knows to include stdlib.h for the system function.

    >this code works fine in turbo c++ 4.5 without any problem.
    Not everyone has Turbo C++ v.old as dirt. In fact, you shouldn't either unless you're working with legacy code that requires it.
    My best code is written with the delete key.

  7. #7
    The Richness... Richie T's Avatar
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    You need a buffer flush and then call getchar:

    Code:
    #include <stdio.h>
    
    int main ()
    {
    int num1, num2, ch;
    
    printf("\nEnter first number ");
    scanf("%d",&num1);
    
    printf("\nEnter second number ");
    scanf("%d",&num2);
    
    if (num2 ==0) printf("\n\nCannot devide by zero\n\n");
    else printf("\n\nAnswer is %d\n\n",num1/num2);
    
    while ((ch = getchar()) != '\n' && ch != EOF);
    getchar();
    return 0;
    }
    No No's:
    fflush (stdin); gets (); void main ();


    Goodies:
    Example of fgets (); The FAQ, C/C++ Reference


    My Gear:
    OS - Windows XP
    IDE - MS Visual C++ 2008 Express Edition


    ASCII stupid question, get a stupid ANSI

  8. #8
    Awesomefaceradcore bivhitscar's Avatar
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    Quote Originally Posted by Prelude
    >Dammit, I always forget that the FAQ knows all.
    The FAQ even knows to include stdlib.h for the system function.

    Bahahahaha, I was slow last night.
    it's ironic considerate rarity patron of love higher knowledge engulfs me...

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