const修饰虚函数 C++ 中const修饰虚函数实例详解
人气:0想了解C++ 中const修饰虚函数实例详解的相关内容吗,在本文为您仔细讲解const修饰虚函数的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:C++,中const修饰虚函数,const修饰虚函数使用详解,下面大家一起来学习吧。
C++ 中const修饰虚函数实例详解
【1】程序1
#include <iostream> using namespace std; class Base { public: virtual void print() const = 0; }; class Test : public Base { public: void print(); }; void Test::print() { cout << "Test::print()" << endl; } void main() { // Base* pChild = new Test(); //compile error! // pChild->print(); }
【2】程序2
#include <iostream> using namespace std; class Base { public: virtual void print() const = 0; }; class Test : public Base { public: void print(); void print() const; }; void Test::print() { cout << "Test::print()" << endl; } void Test::print() const { cout << "Test::print() const" << endl; } void main() { Base* pChild = new Test(); pChild->print(); } /* Test::print() const */
【3】程序3
#include <iostream> using namespace std; class Base { public: virtual void print() const = 0; }; class Test : public Base { public: void print(); void print() const; }; void Test::print() { cout << "Test::print()" << endl; } void Test::print() const { cout << "Test::print() const" << endl; } void main() { Base* pChild = new Test(); pChild->print(); const Test obj; obj.print(); Test obj1; obj1.print(); Test* pOwn = new Test(); pOwn->print(); } /* Test::print() const Test::print() const Test::print() Test::print() */
备注:一切皆在代码中。
总结:const修饰成员函数,也属于函数重载的一种范畴。
感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!
加载全部内容