[HELP] key press

This is a discussion on [HELP] key press within the C Programming forums, part of the General Programming Boards category; Code: #include <conio.h> #include <stdio.h> int main() { int bal,wit,dep; printf("enter balance: "); scanf("%i",&bal); printf("[W]=Withdraw [D]=Deposit\nPress a key to continue"); ...

  1. #1
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    [HELP] key press

    Code:
    #include <conio.h>
    #include <stdio.h>
    
    int main()
    {
    int bal,wit,dep;
    
    printf("enter balance: ");
    scanf("%i",&bal);
    printf("[W]=Withdraw [D]=Deposit\nPress a key to continue");
    
    /*
    if(kbhit()=)
    {
    }
    
    
    if(kbhit()=)
    {
    }
    */
    
    getch();
    }
    I want the user to press either the W or the D key, W for withdrawing, D for depositing. If the user press the W key, it will immediately prompt the user for withdrawal amount (without typing the alphabet W then press ENTER key), how can I do that? Is kbhit() is right function? Btw, I'm learning C on Windows platform.

  2. #2
    Kernel hacker
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    kbhit, if it exists at all in the system (it is not a standard function, so compiler producers do not need to provide it), will tell you if there has been a key pressed or not (that is, the user "hit" a key on the KeyBoard).

    To be standard compliant, use scanf() or getchar().

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  3. #3
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    if i use scanf() or getchar(), user have to press ENTER.

  4. #4
    Kernel hacker
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    Quote Originally Posted by Dakaa View Post
    if i use scanf() or getchar(), user have to press ENTER.
    Correct. If you do not want that, you need to use non-standard solutions. getch() will do it if it, if your code compiles with it.

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  5. #5
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    getch() or getche() worked.
    Last edited by Dakaa; 05-29-2009 at 11:53 PM.

  6. #6
    Making mistakes
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    It won't work everywhere. But if ONLY you are going to use this, it won't matter.

  7. #7
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