C++语言基础 例程 虚基类及应用

贺老师的教学链接  本课讲解

虚基类应用举例

#include <iostream>
#include <cstring>
using namespace std;
class Person
{
public:
    Person(char *nam,char s,int a) //构造函数
    {
        strcpy(name,nam);
        sex=s;
        age=a;
    }
protected:                  //保护成员
    char name[20];
    char sex;
    int age;
};

class Teacher:virtual public Person //声明Person为公用继承的虚基类
{
public:
    Teacher(char *nam,char s,int a,char *t):Person(nam,s,a) //构造函数
    {
        strcpy(title,t);
    }
protected:        //保护成员
    char title[10];
}; //职称

class Student:virtual public Person //声明Person为公用继承的虚基类
{
public:
    Student(char *nam,char s,int a,float sco): //构造函数
        Person(nam,s,a),score(sco) {}           //初始化表
protected:      //保护成员
    float score;
};//成绩

class Graduate:public Teacher,public Student //声明Teacher和Student类为公用继承直接基类
{
public:
    Graduate(char *nam,char s,int a,char *t,float sco,float w): //构造函数
        Person(nam,s,a),Teacher(nam,s,a,t),Student(nam,s,a,sco),wage(w) {} //初始化表
    void show( ) //输出研究生的有关数据
    {
        cout<<"name:"<<name<<endl;
        cout<<"age:"<<age<<endl;
        cout<<"sex:"<<sex<<endl;
        cout<<"score:"<<score<<endl;
        cout<<"title:"<<title<<endl;
        cout<<"wages:"<<wage<<endl;
    }
private:
    float wage;
}; //工资

int main( )
{
    Graduate grad1("Wang-li",'f',24,"assistant",89.5,1234.5);
    grad1.show( );
    return 0;
}