体验虚基类

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/*烟台大学计算机学院学生 *All right reserved. *文件名称:体验虚基类*作者：杨飞 *完成日期：2014年5月2日 *版本号：v1.0 *对任务及求解方法的描述部分:体验虚基类*我的程序：*/  #include <iostream>#include <cstring>using namespace std;class Student{public:    Student(int,string ,float);  virtual void display();protected:    int num;    string name;    float score;};Student::Student(int num1,string name1,float score1){    num=num1;    name=name1;    score=score1;}void Student::display(){    cout<<"num:"<<num<<endl;    cout<<"name:"<<name<<endl;    cout<<"score:"<<score<<endl;}class Graduate:public Student{public:    Graduate(int num1,string name1,float score1,float wage1):        Student(num1,name1,score1),wage(wage1){}     void display();private:    float wage;};void  Graduate::display(){    cout<<"num:"<<num<<endl;    cout<<"name:"<<name<<endl;    cout<<"score:"<<score<<endl;    cout<<"wage:"<<wage<<endl;}int main(){    cout<<"学生信息"<<endl;    Student stu(1001,"huangren",89);    Graduate ren(1008,"acsjx",99,1200);    Student *pt=&stu;    pt->display();    cout<<"研究生信息："<<endl;    pt=&ren;    pt->display();    return 0;}

心得体会：呵呵！！！

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