};//public inheritance, all Base's members remain the same scopeclassPublicDerived:publicBase{public:voidaccessBase() {//okpublicBaseMethod();//okprotectedBaseMethod();//compile error: 'privateBaseMethod' is a
{ public: voidfunct() { intc; c=privatedateA;//error:基类中私有成员在派生类中是不可见的 c=protecteddateA;//ok:基类的保护成员在派生类中为私有成员 c=publicdateA;//ok:基类的公共成员在派生类中为私有成员 } }; /// classD :protectedA//基类A的派生类D(保护继承) { public: voidfunct() ...
第二个规则: 从私有基类继承而来的成员都成为了派生类的私有成员,即使它们在基类中是保护或公有成员。私有继承的含义:私有继承意味着 "用...来实现"。如果使类D私有继承于类B,这样做是因为你想利用类B中已经存在的某些代码,而不是因为类型B的对象和类型D的对象之间有什么概念上的关系。因而,私有继承纯粹是一种...
Example 1: C++ public Inheritance // C++ program to demonstrate the working of public inheritance#include<iostream>usingnamespacestd;classBase{private:intpvt =1;protected:intprot =2;public:intpub =3;// function to access private memberintgetPVT(){returnpvt; } };classPublicDerived:publicBase {...
在C++中,成员访问控制是面向对象编程的核心概念之一,它通过public、private、protected这三个关键字来限定类成员的可见性和可访问性。本文旨在简明扼要地介绍这三个访问修饰符的含义、作用、常见问题、易错点及其避免策略,并通过实例代码加深理解。 image.png
// private inheritance: // - data access type: public , protected -> private // - D cannot access A's private member // class D: private A { public: void test() { a = 1; //b = 1; //Fail c = 1; } }; class E: public C ...
C++用三个关键词来表示访问范围:public, protected, private。 public和private作用就是实现封装。类外的代码可以访问public成员而不能访问private成员;private成员只能由类成员访问。 protected的作用则是实现继承。protected成员可以被派生类(也叫子类)对象访问,不能被用户代码类外的代码访问。
Boutieri, C. (2013). Inheritance, heritage, and the disinherited: Ambiguities of religious pedagogy in the Moroccan public school. Anthropology & Education Quarterly, 44(4), 363-380.Boutieri, C. (2013). Inheritance, heritage, and the disinherited: ambiguities of religious pedagogy in the ...
三、继承(Inheritance) (1) 引出继承 学生类:👨🎓 publicclassStudent{privateString name;privateintage;privatedoublescore;privateString gender; } 员工类:👨💻 publicclassEmployee{privateString name;privateintage;privateString gender;privatedoublesalary; ...
Difference between private, public, and protected inheritance class A { public: int x; protected: int y; private: int z; }; class B : public A { // x is public // y is protected // z is not accessible from B }; class C : protected A { ...