openmp.h

#include <iostream>
#include <omp.h>

int main() {
    int proc = omp_get_num_procs();
    int data[] = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 110};
    std::cout << "Pocet dostupnych jader: " << proc << std::endl;

    // Proměnné vytvořené mimo paralelní sekci, jsou ve výchozím nastavení sdílené mezi vlákny


    int B = 10;
    int sum = 0;

    #pragma omp parallel firstprivate(B) shared(sum)
    {
        B++;
        #pragma omp barrier
        printf("B: %i\n", B);

        #pragma omp for reduction(+:sum)
        for (int i = 0; i < 8; i++) {
            #pragma omp critical
            {
                sum += data[i];
            }
        }

        printf("Sum: %i\n", sum);
    };

    #pragma omp parallel
    {
        int id = omp_get_thread_num();
        printf("Hello from parallel section\n");

        #pragma omp barrier
        printf("ID: %i, cislo: %i\n", id, data[id]);

        #pragma omp sections
        {
            #pragma omp section
            {
                printf("Hello from section on on thread %i\n", id);
            }

            #pragma omp section
            {
                printf("Hello from section on on thread %i\n", id);
            }
        };

        #pragma omp single
        {
            printf("Hello from single section on thread %i\n", id);
        };

        #pragma omp for nowait schedule(dynamic)
        for (int i = 0; i < 12; i++) {
            printf("ID: %i, value: %i \n", id, data[i]);
        }
    };

    printf("Hello from serial section \n");

    return 0;
}