覆盖和隐藏

代码如下：

class Base{public:virtual void fun(int a ){cout << "int" << endl;}};class Driver : public Base{public:using Base::fun;virtual void fun(char c) //隐藏，通过using或者其他方法捞进来父类的{cout << "char" << endl;}};class Base{public:void fun(int a ){cout << "int" << endl;}};class Driver : public Base{public:void fun(int c)  //覆盖{cout << "Driver int" << endl;}};class Base{public:virtual void fun(int a ){cout << "int" << endl;}};class Driver : public Base{public:virtual void fun(int c) //重写，多态{cout << "char" << endl;}};

 结论：

覆盖是参数一样

隐藏是参数不一样

父类加virtual，覆盖变成重写