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  1.     #include <iostream>
  2.  
  3.     template <int N>
  4.     struct Factorial {
  5.         enum { value = N * Factorial<N - 1>::value };
  6.     };
  7.  
  8.     template <>
  9.     struct Factorial<0> {
  10.         enum { value = 1 };
  11.     };
  12.  
  13.     int main()
  14.     {
  15.         auto const f10 = Factorial<10>::value; // done at compile-time
  16.         std::cout << f10 << "\n";              // prints 3628800
  17.  
  18.         return 0;
  19.     }
Success #stdin #stdout 0s 2928KB
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stdin
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Standard input is empty
stdout
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3628800
https://ideone.com/YpXlO
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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