#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#include "mpi.h"

int main(int argc, char *argv[])
{
	int num_procs, myrank;
	double a, b;

	MPI_Init(&argc, &argv);

	MPI_Comm_size(MPI_COMM_WORLD, &num_procs);
	MPI_Comm_rank(MPI_COMM_WORLD, &myrank);

	a = 1.0;
	b = 3.14159;

	switch(myrank % 4)
	{
		case 0: printf("%2d: %e + %e = %e\n", myrank, a, b, a + b); break;
		case 1: printf("%2d: %e - %e = %e\n", myrank, a, b, a - b); break;
		case 2: printf("%2d: %e * %e = %e\n", myrank, a, b, a * b); break;
		case 3: printf("%2d: %e / %e = %e\n", myrank, a, b, a / b); break;
		default: printf("%2d: No Computation\n", myrank); break;
	}

	MPI_Finalize();

	return EXIT_SUCCESS;
}