Greatest Common Divisor

#include<iostream>
using namespace std;
int GCD(int x,int y)
{
 if(x==y)
 {
  return x;
 }
 else if(x%y==0)
 {
  return y;
 }
 else if(y%x==0)
 {
  return x;
 }
 else if(x>y)
 {
  return (GCD(x%y,y));
 }
 else
 {
  return(GCD(x,y%x));
 }
}

int main(){
 int a, b;
 cout<<"Enter two numbersn";
 cin>>a>>b;
 int x=GCD(a,b);
 cout<<"GREATEST COMMON DiVISIOR IS :"<<x;
 return 0;
}