gcc/tests/smoke-test/omphello.c

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#include <omp.h>
#include <stdio.h>
#include <stdlib.h>
int
main (void)
{
int th_id;
int nthreads;
#pragma omp parallel private(th_id)
{
th_id = omp_get_thread_num ();
printf ("Hello World from thread %d\n", th_id);
#pragma omp barrier
if (th_id == 0)
{
nthreads = omp_get_num_threads ();
printf ("There are %d threads\n", nthreads);
}
}
return EXIT_SUCCESS;
}