Cod sursa(job #2093461)

Utilizator Sebi01Who This Sebi01 Data 23 decembrie 2017 18:42:35
Problema Ciurul lui Eratosthenes Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 0.3 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");

int main()
{  int n,i,d,k=0,a;
    f>>n;
     for(i=2;i<=n;i++)
    {a=1;

        for(d=2;d<=i/2;d++)
        {if(i%d==0){a=0;break;}}
        if(a==1)k++;}
   g<<k;
 f.close();
 g.close();
 return 0;}