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

/* declare a global variable */
static int check = 0;

/* function to be executed by created process */
void* go_smith(void* arg)
{
	pid_t *psmith = (pid_t*) arg;
	check++;
	printf("I am Agent Smith %u @%p (%d)\n",(unsigned)*psmith,&check,check);
	exit(0);
}

int main(int argc, char *argv[])
{
	pid_t smith;
	check++;
	if(!fork()) { smith = getpid(); go_smith(&smith); }
	waitpid(smith,0x0,0); /* wait for create process to finish */
	printf("I am Agent Smith 0 @%p (%d)\n",&check,check);
	return 0;
}