fuction calls

This is a discussion on fuction calls within the C Programming forums, part of the General Programming Boards category; Can someone give me an example of how to call a function? I have o write a program and I ...

  1. #1
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    Exclamation fuction calls

    Can someone give me an example of how to call a function? I have o write a program and I need to call a function but I'm totally clueless onhow to do that.

    Thanks.

    Jessica

  2. #2
    ATH0 quzah's Avatar
    Join Date
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    1) Define or prototype the function.
    2) Use it in a function elsewhere.

    Examples:

    Code:
    int function( void ); /* A function prototype. */
    
    int main( void )
    {
        function( ); /* Call the function. */
    }
    
    int function( void ) /* Define the function. */
    {
        printf("Function called.\n");
        return 0;
    }
    Or, without a prototype:

    Code:
    int function( void ) /* Define the function. */
    {
        printf("Function called.\n");
        return 0;
    }
    
    int main( void )
    {
        function( ); /* Call the function. */
    }
    In the second example, I don't need a prototype because I have defined the entire function before I ever call it. In the first example, 'main' wouldn't have been aware of the function if I didn't prototype it first, because it was declared after main tried to use it.

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

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