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Jun 26th, 2017
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C++ 0.68 KB | None | 0 0
  1. #include <iostream>
  2. #include <stdint.h>
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     int primes[10000000]; //10m places for primes
  9.     primes[0] = 2;
  10.     primes[1] = 3;
  11.  
  12.     int number = 2;
  13.     int found = 0;
  14.     int n = 10000000;
  15.  
  16.     cout << "2, 3, ";
  17.     for (uint64_t i = 5; i < n; i+=2) {
  18.         found = 0;
  19.         for (uint32_t j = 0; j < number; j+=1) {
  20.             if ((i % primes[j]) == 0) {
  21.                 found = 1;
  22.                 break;
  23.             }
  24.         }
  25.         if (!found) {
  26.             primes[number] = i;
  27.             number += 1;
  28.             cout << i << ", ";
  29.         }
  30.     }
  31.     cout << endl << endl << "Total found prime numbers: " << number;
  32. }
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