【C++ Primer | 19】運行類型識別

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type_info類

測試代碼：

 1 #include <iostream>   2 #include <typeinfo.h>   3  4 class Base { 5 public: 6     virtual void vvfunc() {} 7 }; 8  9 class Derived : public Base {};10 11 using namespace std;12 int main() {13     Derived* pd = new Derived;14     Base* pb = pd;15     cout << typeid(pb).name() << endl;   //prints "class Base *"  16     cout << typeid(*pb).name() << endl;   //prints "class Derived"  17     cout << typeid(pd).name() << endl;   //prints "class Derived *"  18     cout << typeid(*pd).name() << endl;   //prints "class Derived"  19     delete pd;20 }

輸出結果：

 

【C++ Primer | 19】運行類型識別