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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void soe(int n) {
  5.     vector<bool> p(n+1, true);
  6.     for (int x=2;x*x<=n;x++) {
  7.         if (p[x]) {
  8.  
  9.             for (int y=x*x;y<=n;y+=x)
  10.             {
  11.             	p[y]=false;
  12.  
  13.             }
  14.         }
  15.     }
  16.     for (int x=2;x<=n;x++) {
  17.         if (p[x]) {
  18.             cout<<x<<" ";
  19.         }
  20.     }
  21. }
  22.  
  23. int main() {
  24.     int n=30;
  25.     soe(n);
  26.     return 0;
  27. }
  28.  
Success #stdin #stdout 0.01s 5300KB
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2 3 5 7 11 13 17 19 23 29
https://ideone.com/j069io
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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