1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <omp.h> 4 5 int main(int argc, char *argv[]) 6 { 7 int iam = 0, np = 1; 8 9 if (!getenv("OMP_NUM_THREADS")) 10 omp_set_num_threads(4); 11 12 #pragma omp parallel default(shared) private(iam, np) 13 { 14 #if defined(_OPENMP) 15 np = omp_get_num_threads(); 16 iam = omp_get_thread_num(); 17 #endif 18 printf("Hello from thread %d out of %d\n", iam, np); 19 } 20 21 return 0; 22 } 23
