getchar

This is a discussion on getchar within the C Programming forums, part of the General Programming Boards category; Hello im trying to write a program that is required to use the getchar method. the variables (there is two) ...

  1. #1
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    getchar

    Hello

    im trying to write a program that is required to use the getchar method.

    the variables (there is two) is of type int and float.

    is the coding for it

    int a = (getchar() != '\n');

    will this read a number greater than one digit, like 15. if not who do i write it so it does read bigger numbers.

  2. #2
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    Use fgets() instead of getchar(). fgets() will read until it reaches a \n

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    can fgets() stop chars from being entered

    i need for only numbers to be entered

    Thats why i changed from scanf to get char

  4. #4
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    Quote Originally Posted by TyrioN
    Hello

    im trying to write a program that is required to use the getchar method.

    the variables (there is two) is of type int and float.

    is the coding for it

    int a = (getchar() != '\n');

    will this read a number greater than one digit, like 15. if not who do i write it so it does read bigger numbers.
    ::edit

    The following does not solve your problem - see Hammer's post below - I added a couple of comments on your use of getchar() for information purposes..

    You did ok to assign the value from getchar() to an int, but you should note that you need some extra brackets

    Code:
    /* != is of higher precendence than = , so what you really have 
    is this: */
    
    a = (getchar() != '\n')
    What the above code does is to test the return value of getchar() against '\n' and then sets the variable a to 1 or 0. Not exactly what you want.

    Try some extra brackets:
    Code:
    int a = 0;
    
    (a = getchar()) != '\n'
    ~/
    Last edited by kermit; 09-01-2004 at 07:58 PM.

  5. #5
    End Of Line Hammer's Avatar
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    Quote Originally Posted by TyrioN
    can fgets() stop chars from being entered

    i need for only numbers to be entered

    Thats why i changed from scanf to get char
    http://faq.cprogramming.com/cgi-bin/...&id=1043284385
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

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    Thanks

    Thanks Guys you are a lifesavers

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