• • C++11中增加了final與override關(guān)鍵字，貌似是從Java語言中借鑒而來，用途也一樣。看例子代碼：

    01.#include <iostream> 02.? 03.using?namespace?std; 04.? 05./* use final on a class to prevent inheriting; compilation error */ 06.class?A?/* final */?{ 07.public: 08./* use final on a method to prevent override; compilation error */ 09.virtual?void?func(int)?/* final */?{ cout <<?"A::func()"?<< endl; } 10.}; 11.? 12.class?B :?public?A { 13.public: 14./* use override to make the compiler checks that we are indeed overriding an inherited method */ 15.virtual?void?func(int) override { cout <<?"B::func()"?<< endl; } 16.? 17./* virtual void func(char) override {} compilation error; new method (see signature), does not override existing */ 18.}; 19.? 20.int?main() { 21.A t; 22.t.func(2); 23.? 24.B u; 25.u.func(3); 26.}

    程序輸出：
    A::func()
    B::func()
    
    ?

轉(zhuǎn)載于:https://www.cnblogs.com/lvdongjie/p/4490492.html

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