#include <iostream> template<typename T, std::size_t n> class SquareMatrix{ public: void invert(); }; template<typename T, std::size_t n> void SquareMatrix<T, n>::invert() { T num = n * 5; } int main() { SquareMatrix<double, 5> a; a.invert(); return 0; }
原文：http://www.cnblogs.com/zzyoucan/p/6480057.html