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  1. #include <stdio.h>
  2. #include <omp.h>
  3.  
  4. struct Compare { int val; int index; };
  5. #pragma omp declare reduction(maximum : struct Compare : omp_out = omp_in.val > omp_out.val ? omp_in : omp_out)
  6.  
  7. void selectionsort(int* arr, int size)
  8. {
  9.     for (int i = size - 1; i > 0; --i)
  10.     {
  11.         struct Compare max;
  12.         max.val = arr[i];
  13.         max.index = i;
  14.         #pragma omp parallel for reduction(maximum:max)
  15.         for (int j = i - 1; j >= 0; --j)
  16.         {
  17.             if (arr[j] > max.val)
  18.             {
  19.                 max.val = arr[j];
  20.                 max.index = j;
  21.             }
  22.         }
  23.         int tmp = arr[i];
  24.         arr[i] = max.val;
  25.         arr[max.index] = tmp;
  26.     }
  27. }
  28.  
  29. int main()
  30. {
  31.         int x[10] = {8,7,9,1,2,5,4,3,0,6};
  32.         selectionsort(x, 10);
  33.  
  34.         for (int i = 0; i < 10; i++)
  35.                 printf("%d\n", x[i]);
  36.         return 0;
  37. }
Success #stdin #stdout 0s 5368KB
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https://ideone.com/3R0y4t
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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