//
// parallel
//
#include <omp.h>
#include <stdio.h> 

int main()
{
    int nthreads=0, tid=0;  
    
    #pragma omp parallel private(tid) num_threads(3) 
    {
        tid=omp_get_thread_num(); // Obtain thread id
        printf("Hello world from OpenMP thread %d\n", tid);
    }
    
    return 0;
}