#include <iostream>
using namespace std;

const int size = 4;   //For 4 elements per vector
int list[size]; 
float flist[size];
int shareid[4];

extern "C"{						//link c functions from util.o
int process_fork(int nproc);
void process_join(int nproc,int pid);
int *shareint (int size, int& mid);
void clean_up_shared(int id);
}


int main()
{
	//declare main variables
	int i,j, id ;

	float *q, *p, *sum2, *sum1, total;

	p = (float*) shareint (size * sizeof (int),shareid[0]); //share variables
	q = (float*)shareint (size * sizeof (float),shareid[1]);
	sum1 = (float*) shareint (sizeof (*sum1),shareid[2]);
	sum2 = (float*)shareint (sizeof (*sum1),shareid[3]);
	
	for (j =0; j < size; j++){		//input integer data
		cout << " p[" << j << "] = ";
		cin >> p[j];
	}
	for (j =0; j < size; j++){		//input real data
		cout << " q[" << j << "] = ";
		cin >> q[j];
	}
	
	
	
	id = process_fork(2);

	if (id==0)
		  for (i=0; i< size; i++) 
			*sum1 +=p[i];
		
	else
		  for (i=0; i< size; i++) 
			*sum2 +=q[i];
		
	process_join(2,id);
	
	total=(*sum1)+ (*sum2);

	cout << "The sum of the array P is " << *sum1 << endl;
	cout << "The sum of the array q is " << *sum2 << endl;


	for (i=0; i<4; i++) 
        clean_up_shared (shareid[i]);

	return (0);
}