Cod sursa(job #217104)

Utilizator DanFFodorean Dan DanF Data 26 octombrie 2008 23:56:08
Problema Ciurul lui Eratosthenes Scor 30
Compilator cpp Status done
Runda Arhiva educationala Marime 0.28 kb
Raporteaza aceasta sursa 
#include "fstream.h"
#include "math.h"
int prim(long n)
{for(long i=2;i<=sqrt(n);i++)
    if(n%i==0)return 0;
   return 1;
}
int main()
{long n,s=0,i;
 ifstream f("ciur.in");
 ofstream g("ciur.out");
 f>>n;
 for(i=2;i<=n;i++)
  if(prim(i))s++;
 g<<s;
return 0;
}