Dont want my program to wait for "enter"

This is a discussion on Dont want my program to wait for "enter" within the C++ Programming forums, part of the General Programming Boards category; i made a simple password program. the password is a 4 digit number, you enter the password digit by digit ...

  1. #1
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    Dont want my program to wait for "enter"

    i made a simple password program. the password is a 4 digit number, you enter the password digit by digit and each time you enter one number it checks if it matches. if not you go back to the start. right now everytime you enter a number you need to press enter to have it checked, i would like for it to check everytime a number is entered instead of needing to press enter. im sure its something simple but this is my first c++ attempt :]

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    That's not possible in standard C++. The way C++ interacts with the console is to wait for the user to hit enter.

    To do what you want you have to use non-standard code that depends on your platform. The getch() function is available on several platforms and might help you do what you want to do.

  3. #3
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    What OS are you using?

    The curses library (for *nix) provides several ways to do things like this - getch is available in several other platforms.

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    windows xp

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    Depending on your compiler, try getch(). You'll need to do look in your docs to find out what header file to include. The drawback here is that you'll have to handle backspace yourself - the system won't do it for you. If getch() is not available on your compiler, Google around (unless someone here already knows of a better solution. What you are wanting to do is called "uncooked" or "raw" input.

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    heh, sounds like a pain in the ass so i wont bother :P. i have been using Borland 5.5

  7. #7
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    Ahh... Borland. If you're doing a console app (command prompt - no windows) try conio.h

  8. #8
    Cat without Hat CornedBee's Avatar
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    Wait, every digit I enter is checked immediately and automatically?

    That's bad. That's really bad.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

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