#include <stdio.h>
#include <stdlib.h>

extern char **environ;

int main()
{
	int i;

	i = 0;
	while (environ[i]) 
		printf("%s\n", environ[i++]);

	setenv("MYNEW", "/home/faculty", 1);

	printf("After adding a varaible\n\n");

	printf("HOME=%s\n", getenv("HOME"));
	printf("MYNEW=%s\n", getenv("MYNEW"));
	return 0;
}