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以下程序的执行结果是______。 include class base { public: virtual void who(){c

以下程序的执行结果是______。

include<iostream.h>

class base

{

public:

virtual void who(){cout<<"base class"<<endl:}

};

class derrvel:public base

{

public:

void who(){cout<<"derivel class"<<endl:}

};

class derive2;public base

{

public:

void who() {cout<<"derive2 class"<<endl;}

};

void main()

{

base obj1,*P;

derive1 obj2;

derive2 obj3:

p=&obj1;

p->who();

p=&obj2:

p->who();

p=&obj3;

p->who();

}


参考答案

更多 “ 以下程序的执行结果是______。 include class base { public: virtual void who(){c 以下程序的执行结果是______。include<iostream.h>class base{public:virtual void who(){cout<<"base class"<<endl:}};class derrvel:public base{public:void who(){cout<<"derivel class"<<endl:}};class derive2;public base{public:void who() {cout<<"derive2 class"<<endl;}};void main(){base obj1,*P;derive1 obj2;derive2 obj3:p=obj1;p->who();p=obj2:p->who();p=obj3;p->who();} ” 相关考题
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