fork download
copy 
  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. template<unsigned n, unsigned product = 1>
  5. struct Factorial:
  6.     std::conditional_t< n == 1, std::integral_constant<unsigned, product>,
  7.     Factorial<n - 1, n * product>>
  8. {};
  9.  
  10. int main() {
  11.     std::cout << Factorial<10>::value << "\n";
  12. }
Success #stdin #stdout 0s 15232KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
3628800
https://ideone.com/Jp2FRH
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!