// 
// parallel for 
//
#include <omp.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define N 100000000 
 
int main()
{
    int A, B, i;
	clock_t t0, t1;
	
	srand(time(0));
	
	t0 = clock();
    #pragma omp parallel num_threads(4)
    	#pragma omp for
        for(i=0; i<N; i++)
		{ 
			A=rand(); B=2*A; 
		}
	t1 = clock();

	printf("Elapsed time: %.2e\n", (double)(t1-t0)/CLOCKS_PER_SEC);

    return 0;
}