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### 4.13 Implementing SECTIONS construct

A block as

      #pragma omp sections
      {
        #pragma omp section
        stmt1;
        #pragma omp section
        stmt2;
        #pragma omp section
        stmt3;
      }

becomes

      for (i = GOMP_sections_start (3); i != 0; i = GOMP_sections_next ())
        switch (i)
          {
          case 1:
            stmt1;
            break;
          case 2:
            stmt2;
            break;
          case 3:
            stmt3;
            break;
          }
      GOMP_barrier ();