C++構造、析構、繼承、多態--一道筆試題都考到了

標籤：

#include <stdio.h>class A{    A()    {        printf("A constrution.\n");     }    ~A()    {        printf("A deconstrution.\n");    }    void funA();   virtual  void funB();}; void A::funA()｛        printf("A::funA ...\n"); }        void A::funB()｛        printf("A::funB ...\n");}class B : public A{public:    B()    {        printf("B constrution.\n");     }    ~B()    {        printf("B deconstrution.\n");    }    void funA();     virtual  void funB();}; void B::funA()｛        printf("B::funA ...\n"); }        void B::funB()｛        printf("B::funB ...\n");}void main(){    A *a = new B();    B b;    a-();    a->funB();    b.funA();    b.funB();    delete a;}

寫出輸出結果：（呵呵，順便複習一下g++的編譯的幾個步驟）

C++構造、析構、繼承、多態--一道筆試題都考到了