Pause a C program without getch()

This is a discussion on Pause a C program without getch() within the C Programming forums, part of the General Programming Boards category; I was wondering if there is another way to prevent a C program closing when user has been inputed data ...

  1. #1
    Its hard... But im here swgh's Avatar
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    Pause a C program without getch()

    I was wondering if there is another way to prevent a C program closing when user has been inputed data other than using getch(). I do not like using it. In C++, you can do this:

    Code:
    cin.ignore();
    getchar();
    But cin is a C++ keyword. When i use getch I have to include conio.h with the program which is a bit of a waste for the purpose of 1 statement. Is there a command under the stdio,h header that can execute the same way getch() does in conio,h?

    Example:

    Code:
    #include <stdio.h>
    #include <conio.h>  // this is annoying!
    
    int main()
    {
     	int num1, num2;
     	int sec = 0;
     	
     	printf("Enter my first secret nunber: ");
    	
    	scanf("%d", &num1);
    	
    	printf("\nEnter my second secret number: ");
    	
    	scanf("%d", &num2);
    	
    	/* logical AND */
    	
    	if (( num1 == 9 ) && ( num2 == 99 ))
    	{
    	   	  printf("\nWELL DONE!");
    	   	  sec = 5;
        }
        
        /* logical OR */
    	
    	if (( num1 == 0 ) || ( num2 == 0 ))
    	{
    	   	  printf("\nNone of the numbers are zero");
    	   	  sec = 4;
        }
        
        /* logical NOT */
    	
    	if ( !sec )
    	{
    	   	 printf("\nSorry, both or either numbers are incorrect");
        }
        
        getch();
        
        return 0;
    }

  2. #2
    and the hat of wrongness Salem's Avatar
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    getchar();
    In stdio.h

  3. #3
    The Richness... Richie T's Avatar
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    You'll probably need to flush the input buffer before calling getchar
    because scanf leaves the newline character in the buffer. easy
    flush - taken from FAQ

    Code:
    int ch;
    .
    .
    .
    while ((ch = getchar()) != '\n' && ch != EOF);
    printf ("Press enter to continue...");
    getchar ();
    or even just

    Code:
    while ('\n' != getchar ());
    printf ("Press enter to continue...");
    getchar ();
    works for most, but the first is probably more correct.
    No No's:
    fflush (stdin); gets (); void main ();


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


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  4. #4
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    in windows you could do a system("PAUSE")

  5. #5
    The Richness... Richie T's Avatar
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    that'd work, but that defeats the purpose of the post: system
    is defined in stdlib.h, so you'd have to include that instead of
    conio.h... system ("pause") and getch are both non portable
    methods too, whereas the getchar approach is, and its all in
    stdio.h as requested.
    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


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