#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <pwd.h>
#include <ctype.h>
#include <sys/wait.h>
#include <unistd.h>
#include <time.h>
#include <math.h>

int putere(int a, int b) //a la put b
{
	for(int i=1; i<=b; i++)
		a=a*a;
	return a;
}
int main(int argc, char* argv[])
{
	int p1[2],p2[2];
	if(pipe(p1)==-1)
	{
		printf("eroare la pipe 1");
		exit(0);
	}
	if(pipe(p2)==-1)
	{
		printf("eroare la pipe 2");
		exit(0);
	}
	pid_t fiu1=fork()
	{
		if(fiu1==-1)
		{
			printf("eroare la primul fiu");
			exit(0);
		}
		else if(fiu1==0)
		{
			close(p1[1]);
			close(p2[0]);
			close(p2[1]);
			int a1, b1;
			read(p1[0],&a1,sizeof(int));
			read(p1[0],&b1,sizeof(int));
			int rezultat=putere(a1,b1);
			close(p1[0]);
		}
		else
		{
			pid_t fiu2=fork()
			if(fiu2==-1)
			{
				printf("eroare la fiul 2");
				exit(0);
			}
		}
		else if(fiu2==0)
		{
			close(p1[0]);
			close(p2[1]);
			close(p1[1]);
			int a2,b2;
			read(p2[0],&a2,sizeof(int));
			read(p2[0],&b2,sizeof(int));
			int rezultat2=putere(a2,b2);
			close(p2[0]);
		}
		else
		{
			close(p1[0]);
			close(p2[0]);
			srand(time(NULL));
			int nr1=rand()%10;
			srand(time(NULL));
			int nr2=rand()%10;
			write(p1[1],&nr1,sizeof(int));
			write(p2[1],&nr2,sizeof(int));
			write(p1[1],&nr2,sizeof(int));
			write(p2[1],&nr1,sizeof(int));
			close(p1[1]);
			close(p2[1]);
		}
	}
}