Cod sursa(job #432218)

Utilizator iamdoruTanase Theodor iamdoru Data 1 aprilie 2010 23:06:55
Problema Ciurul lui Eratosthenes Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.32 kb
Raporteaza aceasta sursa 
#include<stdio.h>
FILE *f,*g;
int contor;
int n,i,j;
char v[2000000];
int main() {
f=fopen("ciur.in","r");
fscanf(f,"%d",&n);
fclose(f);
j=2;
while(j<=n)
{
if(v[j]!='1') 
	{
	contor++;
	for(i=j;i<=n;i+=j)
		v[i]='1';
	}
j++;
}
g=fopen("ciur.out","w");
fprintf(g,"%d\n",contor);
fclose(g);
return 0;}