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  1. #include <stdio.h>
  2. #include <omp.h>
  3.  
  4. int main() {
  5.     int n = 10; 
  6.     int a[n], b[n], c[n];
  7.  
  8.     // Initialize arrays
  9.     for (int i = 0; i < n; ++i) {
  10.         a[i] = i;
  11.         b[i] = i * 2;
  12.     }
  13.  
  14.     // Work sharing with parallel for
  15.     #pragma omp parallel for
  16.     for (int i = 0; i < n; ++i) {
  17.         c[i] = a[i] + b[i]; 
  18.     }
  19.  
  20.     printf("Vector Addition using parallel for:\n");
  21.     for (int i = 0; i < n; ++i) {
  22.         printf("c[%d] = %d\n", i, c[i]);
  23.     }
  24.  
  25.     // Work sharing with sections
  26.     #pragma omp parallel sections
  27.     {
  28.         #pragma omp section 
  29.         {
  30.             for (int i = 0; i < n/2; ++i) {
  31.                 c[i] *= 2; 
  32.             }
  33.         }
  34.         #pragma omp section 
  35.         {
  36.             for (int i = n/2; i < n; ++i) {
  37.                 c[i] *= 3; 
  38.             }
  39.         }
  40.     }
  41.  
  42.     printf("\nVector Modification using sections:\n");
  43.     for (int i = 0; i < n; ++i) {
  44.         printf("c[%d] = %d\n", i, c[i]);
  45.     }
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0s 5284KB
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Standard input is empty
stdout
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Vector Addition using parallel for:
c[0] = 0
c[1] = 3
c[2] = 6
c[3] = 9
c[4] = 12
c[5] = 15
c[6] = 18
c[7] = 21
c[8] = 24
c[9] = 27

Vector Modification using sections:
c[0] = 0
c[1] = 6
c[2] = 12
c[3] = 18
c[4] = 24
c[5] = 45
c[6] = 54
c[7] = 63
c[8] = 72
c[9] = 81
https://ideone.com/8VHFbl
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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