Cod sursa(job #223021)

Utilizator rares192Preda Rares Mihai rares192 Data 26 noiembrie 2008 18:11:41
Problema Fractii Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include<fstream.h>

ifstream fin  ("fractii.in");
ofstream fout ("fractii.out");

int i, j, k, n;

int cmmdc(int a, int b);
int main()
{

fin>>n;

for(i=1; i<=n; i++)
	for(j=1; j<=n; j++)
	{
	if (cmmdc(i, j) == 1)
	k++;
	}

	fout<<k;
return 0;
}

int cmmdc(int a, int b)
{
int r;
while(b)
{
	r=a%b;
	a=b;
	b=r;
}
return a;
}