#include <sys/types.h> 	//pid_t
#include <unistd.h> 	//fork()
#include <sys/wait.h> 	//waitpid
#include <stdio.h> 	//printf...
#include <stdlib.h> 	//exit()
//gp-4.c
int main(int argc, char *argv[]){    
   	pid_t cpid, w, pid1,pid2,pid3,pid4,pid5,pid6,pid7; 

   	if (pid1=fork() == 0) execlp("/home/mumolo/proc","proc","T1",NULL);
   	waitpid(pid1, NULL, 0);
   
	if (pid3=fork() == 0) execlp("/home/mumolo/proc","proc","T3",NULL);
   	if (pid2=fork() == 0) execlp("/home/mumolo/proc","proc","T2",NULL);
    
	waitpid(pid2, NULL, 0);
   
	if (pid4=fork() == 0) execlp("/home/mumolo/proc","proc","T4",NULL);
   	if (pid5=fork() == 0) execlp("/home/mumolo/proc","proc","T5",NULL);
    
	waitpid(pid3, NULL, 0);
  
	if (pid6=fork() == 0) execlp("/home/mumolo/proc","proc","T6",NULL);

    	waitpid(pid5, NULL, 0);
    	waitpid(pid4, NULL, 0);
    	waitpid(pid6, NULL, 0);

   	if (pid7=fork() == 0) execlp("/home/mumolo/proc","proc","T7",NULL);
    	waitpid(pid7, NULL, 0);
}