15. testmycall.c (new user space source file to be created)
testmycall.c
Create a C file called testmycall.c in the same directory as testmycall.h. The C file will look like:
/*---Start of C file------*/
#include<stdio.h>
#include "testmycall.h"
int main(void)
{
printf("%d\n", mycall(15));
}
/*---End of C file------*/