fuction calls

[jlmac2001]

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

[quzah]

1) Define or prototype the function.
2) Use it in a function elsewhere.

Examples:

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:

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.