c++ 在子类中向父类的构造函数传递参数的小例子.包括类中常量的初始化

基类: #include <iostream.h> class Animal() { public: Animal(int height,int weight){ cout<<"Animal"<<endl; } void eat() { cout<<"animal eat"<<endl; } }; 子类: class fish:public Animal() { public: fish():Animal(400,300),a(20){//在子类fish中向父类的构造函数传递参数.a(20)是初始化fish类中的常量a cout<<"fish"<<endl; } private: const int a; };