#include <iostream>using namespace std;class IntClass
...{
public: typedef int subType;
};template <typename T>class Base...{public: //typename 修饰，subType 视为一个型别 //如果不用，subType 视为一个值 typename T::subType a; void Print()
...{ cout <<a <<endl;
}};int main()...{ Base<IntClass> a; a.a = 1; a.Print(); return 0;}