Making text menus

This is a discussion on Making text menus within the C Programming forums, part of the General Programming Boards category; Hi I need to do a text menu for my program. I know that I could just use printf, fgets ...

  1. #1
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    Making text menus

    Hi I need to do a text menu for my program. I know that I could just use printf, fgets and sscanf but there are a few problems.

    Say if I want 1 digit from the user to use as their choice in the menu I can do it but the user can type as much as he wants untill he presses enter. Everything but the first digit is ignored but I still think its unprofesional. I would like the program to instantly take the number he pressed right away, withought having to press enter first.

    Also I would like to be able to display things as the user is typing things sometimes.

    Anyone have an idea? Thanks

  2. #2
    ATH0 quzah's Avatar
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    This is OS and compiler specific. There is no standard way to read a keystroke. Also, if you're just reading single keystrokes, why can't you wait till that single action has taken place to display something. It's not as if it actually takes any significant time to press a key.

    Quzah.
    Hope is the first step on the road to disappointment.

  3. #3
    Just Lurking Dave_Sinkula's Avatar
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    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

  4. #4
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    Thanks getch() seems to work with my compiler (Sorry for not reading that faq). I wont worry about the blocking text input for the things more than one character because it doesn't matter too much.

    Now the idea of this sniplet is it will take a 1 character input and if its not a number 0 - 6 it spits it back. It doesn't work though

    Code:
    while (choice = getch() > 6 || !isdigit(choice))
        printf ("Woops, '%d' isn't a valid choice\n", choice);
    
    printf("You chose: %d\n", choice);
    It says X isn't a valid choice no matter what you type, even if it is.

    Thanks
    Last edited by kzar; 03-30-2005 at 11:06 AM.

  5. #5
    Just Lurking Dave_Sinkula's Avatar
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    Code:
    while ((choice = getch()) > '6' || !isdigit(choice))
        printf ("Woops, '%c' isn't a valid choice\n", choice);
    
    printf("You chose: %c\n", choice);
    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

  6. #6
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    Quote Originally Posted by Dave_Sinkula
    Code:
    while ((choice = getch()) > '6' || !isdigit(choice))
        printf ("Woops, '%c' isn't a valid choice\n", choice);
    
    printf("You chose: %c\n", choice);
    Thanks, works great.

  7. #7
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    Incase anyone is interested I found a way to use curses on dev-c++ at this page: http://devpaks.org/show.php?devpak=7 .

    edit: I have found a good tutorial here: http://en.tldp.org/HOWTO/NCURSES-Pro...elloworld.html
    Last edited by kzar; 03-31-2005 at 09:44 AM.

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