MetaFactorial

#include <iostream>
#include <assert.h>

using namespace std;
//Example own practice.

template<int n>
class MetaFactorial {
  public:
    enum{value = n * MetaFactorial<n-1>::value};
};

template<>
class MetaFactorial<0> {
  public:
    enum{ value = 1 };
};

int main() {

  cout<<MetaFactorial<5>::value<<endl;

  return 0;
}