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counts all prime numbers youre welcome

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Jul 23rd, 2019
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C++ 0.34 KB | None | 0 0
  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int in, out = 0, n;
  8.     bool b;
  9.     cin >> n;
  10.     for (int j = 0; j < n; j++) {
  11.         cin >> in;
  12.         b = in <= 1 ? false : true;
  13.         for (int i = 2; i <= in / 2; i++) {
  14.             if (in % i == 0) b = false;
  15.         }
  16.         if (b) out++;
  17.     }
  18.     cout << out;
  19. }
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