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

int main (int argc, char *argv[])
{
	char *ptr;
	if (argc < 3)
	{
		printf ("Usage: %s <env var> <target prog>\n", argv[0]);
		exit(0);
	}
	ptr = getenv (argv[1]);
	ptr += (strlen(argv[0]) - strlen(argv[2])) * 2;
	printf ("%s will be at %p\n", argv[1], ptr);
}