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+/******************************************************************************
+* FILE: omp_workshare2.c
+* DESCRIPTION:
+* OpenMP Example - Sections Work-sharing - C/C++ Version
+* In this example, the OpenMP SECTION directive is used to assign
+* different array operations to threads that execute a SECTION. Each
+* thread receives its own copy of the result array to work with.
+* AUTHOR: Blaise Barney 5/99
+* LAST REVISED: 04/06/05
+******************************************************************************/
+#include <omp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#define N 50
+
+int main (int argc, char *argv[]) {
+
+int i, nthreads, tid;
+float a[N], b[N], c[N];
+
+/* Some initializations */
+for (i=0; i<N; i++)
+ a[i] = b[i] = i * 1.0;
+
+#pragma omp parallel shared(a,b,nthreads) private(c,i,tid)
+ {
+ tid = omp_get_thread_num();
+ if (tid == 0)
+ {
+ nthreads = omp_get_num_threads();
+ printf("Number of threads = %d\n", nthreads);
+ }
+ printf("Thread %d starting...\n",tid);
+
+ #pragma omp sections nowait
+ {
+ #pragma omp section
+ {
+ printf("Thread %d doing section 1\n",tid);
+ for (i=0; i<N; i++)
+ {
+ c[i] = a[i] + b[i];
+ printf("Thread %d: c[%d]= %f\n",tid,i,c[i]);
+ }
+ }
+
+ #pragma omp section
+ {
+ printf("Thread %d doing section 2\n",tid);
+ for (i=0; i<N; i++)
+ {
+ c[i] = a[i] * b[i];
+ printf("Thread %d: c[%d]= %f\n",tid,i,c[i]);
+ }
+ }
+
+ } /* end of sections */
+
+ printf("Thread %d done.\n",tid);
+
+ } /* end of parallel section */
+
+ return 0;
+}