Printing factorial at compile time in C++
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Published on 2011-02-12T11:11:57Z
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2011/02/13
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template<unsigned int n>
struct Factorial {
enum { value = n * Factorial<n-1>::value};
};
template<>
struct Factorial<0> {
enum {value = 1};
};
int main() {
std::cout << Factorial<5>::value;
std::cout << Factorial<10>::value;
}
above program computes factorial value during compile time. I want to print factorial value at compile time rather than at runtime using cout. How can we achive printing the factorial value at compile time?
I am using VS2009.
Thanks!
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