这哪里错了？

#include<iostream>
using namespace std;
int x,y;
int gcd(int x,int y)
{
	int r=x%y;
	while(r!=0)
	{
		x=y;
		y=r;
		r=x%y;
	}
	return y;
	return (y==0)?x:gcd(y,x%y);
}
int lcm()
{
	return x*y/gcd(x,y);
}
int main()
{
	cin>>x>>y;
	cout<<gcd(x,y)<<endl;
	cout<<lcm()<<endl;
	return 0;
}