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  1. #include <stdlib.h>
  2. #include <pthread.h>
  3. #include <stdio.h>
  4. #include <unistd.h>
  5. #include <math.h>
  6. #include <time.h>
  7.  
  8. pthread_t thr_counter[8];
  9.  
  10. unsigned long n_odd = 0;
  11. unsigned long n_even = 0;
  12.  
  13. void *counter(void *arg) {
  14.   int n;
  15.   int *c = (int*)arg;
  16.   double d;
  17.  
  18.   for (int k=0; k<*c; k++) {
  19.     n = rand()%100;
  20.     for (int j=0; j<n; j++)
  21.       d = sqrt((double)j);
  22.     if (n%2 == 0)
  23.       n_even++;
  24.     else
  25.       n_odd++;
  26.   }
  27.  
  28.   pthread_exit(NULL);
  29. }
  30.  
  31. int main() {
  32.   int cnt=1000000, k;
  33.   srand(time(NULL));
  34.   for (k=0; k<8; k++) {
  35.     pthread_create(&thr_counter[k], NULL, counter, (void*)&cnt);
  36.   }
  37.  
  38.   for (k=0; k<8; k++) {
  39.     pthread_join(thr_counter[k], NULL);
  40.   }
  41.  
  42.   printf("Broj parnih:   \t %lu\n", n_even);
  43.   printf("Broj neparnih: \t %lu\n", n_odd);
  44.   printf("Ukupno:        \t %lu\n", n_odd+n_even);
  45.   return 0;
  46. }
Success #stdin #stdout 0.61s 5328KB
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stdin
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Standard input is empty
stdout
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Broj parnih:   	 3998208
Broj neparnih: 	 4001792
Ukupno:        	 8000000
https://ideone.com/61w9Ps
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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