[ C++ ] Functia Ackerman

#include<iostream.h>
long long ack(long m, long n)
{
if (!m) return n+1;
else
if (!n) return ack(m-1,1);
else return ack(m-1, ack(m,n-1));
}

int main()
{
long long m,n;
cout<<"Introduceti prima cifra: ";
cin>>m;
cout<<"Introduceti al doilea numar: ";
cin>>n;
cout<<ack(m,n);
return 0;
}