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Listing 1. example.c

#include <time.h>
double My_variable = 3.0;
int fact(int n)
    {
    if (n <= 1) return 1;
    else return n*fact(n-1);
    }
int my_mod(int x, int y)
    {
    return (x%y);
    }
char *get_time()
    {
    time_t ltime;
    time(&ltime);
    return ctime(&ltime);
    }