#include <stdio.h>
#include <unistd.h> /*  getpid() */
#include <omp.h>
int is_shared=1;
int main(){
#pragma omp parallel num_threads(4)
    {
        is_shared++;
        printf("Hello from thread %d, I see is_shared=%d.\n",omp_get_thread_num(),is_shared);
        
    }
}

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