13周任务一

来源：互联网发布：移动端底部广告js 编辑：程序博客网时间：2024/05/16 04:49
#include <iostream>using namespace std;class StudentA //（1）修改studentA类中各数据成员和成员函数的访问限定符，并观察发生的现象{public:    StudentA(int n,string nam,char s);    void showA();    ~StudentA( ) { }protected:    int num;    string name;    char sex ;};class StudentB: public StudentA //（2）修改此处的继承方式，并观察发生的现象{public:    StudentB(int n,string nam,char s,int a,string ad);    void showB( );    ~StudentB( ) { }private:    int age;    string addr;};StudentA::StudentA(int n,string nam,char s){    num=n;    name=nam;    sex=s;}void StudentA::showA(){    cout<<"num: "<<num<<endl;    cout<<"name: "<<name<<endl;    cout<<"sex: "<<sex<<endl<<endl;}StudentB::StudentB(int n,string nam,char s,int a,string ad):StudentA(n,nam,s){    age=a;    addr=ad;}void StudentB::showB( ){    cout<<"num: "<<num<<endl;    cout<<"name: "<<name<<endl;    cout<<"sex: "<<sex<<endl;    cout<<"age: "<<age<<endl;    cout<<"address: "<<addr<<endl<<endl;}int main( )  //(3)思考由于访问限定符和继承方式的改变，会引发什么现象的发生，并作出解释{    StudentB stud1(10010,"Wang-li",'f',19,"115 Beijing Road,Shanghai");    StudentB stud2(10011,"Zhang-fun",'m',21,"213 Shanghai Road,Beijing");    StudentA stud3(20010,"He-xin",'m');    stud1.showB( );    stud2.showA( );    stud3.showA( );    return 0;}
运行结果：