#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <signal.h>
#include <sys/wait.h>

int c_i;
int create_and_pause(int i)
{
	int pid = fork();
	if (pid<0)
	{
		printf("error");
	}
	if(pid==0)
	{
		printf("[Child process %d: %d]Was created by %d and will pause\n",i,getpid(),getppid());
		//pause();
		c_i=i;
		raise(SIGSTOP);

	}
	return pid;
}

int main(int argc, char * argv[])
{
	int i;

	int N =5;
	int d[5] = {1,1,2,1,2}; //na antikatastathei me loop pou pairnei argv
	int p[N];
	int father_p = getpid();

	for(i = 0; i<N; i++)
	{
		if(getpid()==father_p)
		{
			p[i] = create_and_pause(i);
			sleep(1);
		}
	}

	if(getpid() == father_p)
	{
		printf("tis ftiaksame oles yay \n");

		for(i =0; i<N; i++)
		{
			kill(p[i],SIGCONT);

		}
		printf("ekana se oles continue\n");
	}


	int j = 0 , cnt = 0 ;

	if(getpid()!=father_p)
	{


		sleep(2);
		printf("[Child Process %d: %d]Is starting \n",c_i,getpid());
		for(j =0; j<10;j++)  //tha antikatastathei apo while true
		{
			cnt++;
			sleep(d[c_i]);
			printf("process %d counter is %d\n",getpid(),cnt);
		}
		printf("eimai h %d kai molis teliosa\n",getpid());
		exit(0);

	}

	if(getpid() == father_p)
	{
		printf("twra kanw wait poutanes\n");
		for(i=0;i<N;i++)
		{
			wait(NULL);
		}
	}
}