Separate Compilation Intro

Example:

recall the function f(x)=x^2 and the function we built. The lecture is linked here.

#include <stdio.h>

#include "function.h"

/*

The function.h header file's contents is the

function prototype.So you can use the function

*/

main()

    // declare variables

    int a, y, z;

    a = f(2); // the first function call

    y = 5;

    z = f(y); // the second function call

    /* Printing the Results To the Screen */

    printf("a = %d \n", a);

    printf("z =  %d \n", z);

function.h

int f(int x);

function.c

f(int x) // This part is the function definition

    int result;

    result = x*x;

    return result

    // Alternatively, you could just use the code below

    // return x*x;

Now we can use separate compilation by executing the compile command below.

cc driver.c function.c -o app

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