c++中确定类型信息 typeid().name()

 1 #include <iostream>
  2 #include <typeinfo>
  3 using namespace std;
  4 class X{virtual void foo(){}};
  5 class Y:public X{void foo(){}};
  6 class Z:public X{void foo(){}};
  7
  8 void func(X &x){
  9     if(typeid(x) == typeid(Y)){  //判断两个对象类型是否相同
 10         cout << "对Y对象处理" << endl;
 11     }else if(typeid(x) == typeid(Z)){
 12         cout << "对Z对象处理" << endl;
 13     }
 14 }
 15 int main(void){
 16     int x;
 17     cout << typeid(int).name() << endl; //i
 18     cout << typeid(x).name() << endl; //i
 19     cout << typeid(char).name() << endl; //c
 20     cout << typeid(unsigned int).name() << endl; //j
 21     cout << typeid(double[10]).name() << endl; //A10_d
 22     cout << typeid(int *[5]).name() << endl; //A5_Pi
 23     cout << typeid(int (*)[5]).name() << endl; //PA5_i
​ 24     cout << typeid(int (*[5])(int)).name() << endl; //A5_PFiiE
 25     class AA{};
 26     cout << typeid(AA).name() << endl;
 27     X *px = new Y;
 28     cout << typeid(*px).name() << endl;
 29
 30     Y y;
 31     func(y);
 32     Z z;
 33     func(z);
 34     return 0;
 35 }
​
​tarena@ubuntu:~/cplus/day11$ ./a.out
i
i
c
j
A10_d
A5_Pi
PA5_i
A5_PFiiE
Z4mainE2AA
1Y
对Y对象处理
对Z对象处理