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Apr 29th, 2017
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  1. #include<stdio.h>
  2. #include<pthread.h>
  3.  
  4.  
  5. void *func(void *A)
  6. {
  7. int *arr = (int *)A;
  8. int sum = 0;
  9. for(int i = 0; i < 500; i++)
  10. {
  11. sum += arr[i];
  12. }
  13. pthread_exit((void*)&sum);
  14. }
  15.  
  16.  
  17.  
  18.  
  19. int main()
  20. {
  21. pthread_t t1, t2;
  22. int arr[1000];
  23. int x;
  24. int sums = 0;
  25. for(int i = 0; i < 1000; i++)
  26. {
  27. arr[i] = i + 1;
  28. sums += arr[i];
  29. }
  30. pthread_create(&t1, NULL, func, (void*) arr);
  31. pthread_create(&t2, NULL, func, (void*) (arr + 500));
  32.  
  33. int sum1, sum2;
  34. pthread_join(t1, (void*)&sum1);
  35. pthread_join(t2, (void*)&sum2);
  36. printf("%d\n", sum1 + sum2);
  37. printf("%d\n", sums);
  38. }
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