| 2 | using namespace std; |
| 3 | |
| 4 | void printAllPrime(int n){ |
| 5 | vector<bool> isPrime(n+1,true); |
| 6 | for(int i=2; i<=n ; i++){ |
| 7 | if(isPrime[i]){ |
| 8 | cout<<i<<" "; |
| 9 | for(int j= i*i; j<=n; j=j+i){ |
| 10 | isPrime[j] = false; |
| 11 | } |
| 12 | } |
| 13 | } |
| 14 | |
| 15 | } |
| 16 | |
| 17 | int main(){ |
| 18 | int n; |