模版元递归实现阶乘

1. #include<iostream>
2. usingnamespace std;
3. template<unsigned n>
4. structFactorial
5. {
6. enum{value = n *Factorial< n -1>::value};
7. };
9. template<>
10. structFactorial<0>
11. {
12. enum{value =1};
13. };
15. int main()
16. {
17. cout <<Factorial<3>::value << endl;
19. return0;
20. }

 

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