Kasus 5.8 - Alpro

Dev c++ 5.8
#include <iostream>
#include <string>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
void ptx(int m, int n, int r){

r=m%n;
if(r==0)
{
}
else
{
 cout<<r<<endl;
 m=n;
 n=r;
 ptx(m,n,r);
}
}
int main(int argc, char** argv) {
 int m,n,r;
 cout<<"Masukkan bilangan pertama : ";
 cin>>m;
 cout<<"Masukkan bilangan kedua : ";
 cin>>n;
 cout<<"Nilai m : "<<m<<endl;
 cout<<"Nilai n : "<<n<<endl;
 r=1;
 ptx(m,n,r);
 return 0;
}