need a io function

This is a discussion on need a io function within the C Programming forums, part of the General Programming Boards category; what the function that returns the pressed key but do not waits for it? for a example, i want that ...

  1. #1
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    need a io function

    what the function that returns the pressed key but do not waits for it?

    for a example, i want that the following code writes "bleh" on the screen until i press w

    while(1) {
    ch = <my wanted function>
    if(ch == 'w')
    break;

    puts("bleh");
    }

  2. #2
    Im back! shaik786's Avatar
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    What OS? What Compiler?

    Check to see if your compiler supports getch()

  3. #3
    i dont know Vicious's Avatar
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    umm.. your not completely clear on what your wanting to do...

    but try this...

    Code:
    #include <conio.h>
    #include <stdio.h>
    
    int ch;
    bool quit;
    
    main()
    {
        while ( !quit )
        {
            ch = getch();
            if ( ch == 'w' )
                quit = 1;
            else
            {
                  pfintf ("bleh");
             }
        }
    return 0;
    }
    sorry if thats not right... i really dont know C i do C++
    What is C++?

  4. #4
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    hey you two guys, thanks for the help, but you didnt understand good, in your example it will wait for a key be pressed and then will print on the screen, also, dont say me getche() or other standards functions, it wont work

    i am using DJGPP

  5. #5
    Im back! shaik786's Avatar
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    See help on kbhit(). Returns 1 if there was a key pressed, else returns 0. If it returns 1, call getch(), which will return the key pressed.

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