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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.  
  5.     int i, j;
  6.  
  7.     for (i = 2; i < 20; i++) {
  8.         for (j = 2; j <= (i/j); j++) {
  9.             if (!(i%j)) break;
  10.         }
  11.         if (j > (i/j)) printf("%d\n", i);
  12.     }
  13.  
  14.     return 0;
  15. }
Success #stdin #stdout 0s 2156KB
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https://ideone.com/OmXHvp
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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