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;

};