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  1. #include <stdio.h>
  2. #include <stdbool.h>
  3. #include <mpi.h>
  4.  
  5. #define MAX 100000
  6.  
  7. // �P�_��ƪ����
  8. bool is_prime(int num) {
  9.     if (num <= 1) return false;
  10.     for (int i = 2; i * i <= num; i++) {
  11.         if (num % i == 0) {
  12.             return false;
  13.         }
  14.     }
  15.     return true;
  16. }
  17.  
  18. int main(int argc, char *argv[]) {
  19.     int rank, size;
  20.  
  21.     // ��l��MPI����
  22.     MPI_Init(&argc, &argv);
  23.  
  24.     // ������e�i�{��rank�]�s���^�H���`�i�{��
  25.     MPI_Comm_rank(MPI_COMM_WORLD, &rank);
  26.     MPI_Comm_size(MPI_COMM_WORLD, &size);
  27.  
  28.     // �C�Ӷi�{�B�z���d��
  29.     int range_per_process = MAX / size;
  30.     int start = rank * range_per_process + 2;
  31.     int end = (rank + 1) * range_per_process + 1;
  32.  
  33.     if (rank == size - 1) {
  34.         // �̫�@�Ӷi�{�B�z�Ѿl���d��
  35.         end = MAX;
  36.     }
  37.  
  38.     // �C�Ӷi�{��X��B�z�d�򤺪����
  39.     for (int num = start; num <= end; num++) {
  40.         if (is_prime(num)) {
  41.             printf("Process %d: %d\n", rank, num);
  42.         }
  43.     }
  44.  
  45.     // ���ݩҦ��i�{����
  46.     MPI_Finalize();
  47.  
  48.     return 0;
  49. }
  50.  
  51.  
Success #stdin #stdout #stderr 0.29s 40856KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Error: unexpected '/' in "/"
Execution halted
https://ideone.com/3TwNZE
language:
R (R 3.5.2)
created:
11 days ago
visibility:
public

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