/**
 * This simple program takes a single command line argument,
 * converts it to an integer, and then goes into an infinite
 * loop printing out the integer and its address in memory.
 *
 * Run this program simultaneously in several different terminals.
 * What do you notice about the value of "myval"?  What do you notice
 * about the address of myval?
 *
 * What does this imply about memory space in two different processes,
 *  even for the same program?
 */

#include <stdio.h>

int myval;

int main(int argc, char *argv[])
{
	if (argc < 2) exit(1);

	myval = atoi(argv[1]);

	while (1)
		printf("myval == %d, &myval == 0x%lx\n",
			myval, (long) &myval);
}