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

int main(int argc, char **argv)
{
	volatile int modified;
	char buffer[64];
	
	modified = 0;
	gets(buffer);
	
	if (modified != 0) {
		printf("You have changed the 'modified' variable\n");
	} else {
		printf ("Try again?\n");
	}
}