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Gcd using recursion

#include<iostream>
#include<algorithm>
using namespace std;
int gcd(int m,int n)
{
    if(max(m,n)%min(m,n)==0)
    {
        return min(m,n);
    }
    else
    {
        gcd(max(m,n)%min(m,n),min(m,n));
    }
}
int main()
{
    int m,n;
    cin>>m>>n;
    cout<<gcd(m,n);
    return 0;
}

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