有子对象该怎麽办

Description

已知类如下：
（1） BirthDate（生日类） 含有：year,month,day 等数据成员
（2） Teacher（教师类）含有：num,name,sex 等数据成员
（3） Professor（教授类）含有：教师类和生日类的数据成员
要求：
（1）通过对Teacher和BirthDate使用继承和组合的方式设计Professor
（2）定义Professor类对象prof，并给出所有数据的初值
（3）修改prof的生日数据
（4）输出prof的全部最新数据

Input

num,name,sex,year,month,day 和修改后的year,month,day

Output

num,name,sex,year,month,day

Sample Input

2001 Huang m
1970 1 1
1994 5 26

Sample Output

num:2001
name:Huang
sex:m
birthday:1994/5/26

#include <iostream>

#include <string>

using namespace std;

class BirthDate {

public:

    BirthDate(int,int,int);

    void display();

    void setbirthday(int,int,int);

private:

    int year;

    int month;

    int day;

};
BirthDate::BirthDate(int y,int m,int d):year(y),month(m),day(d){}
void BirthDate::display()
{
    cout<<"birthday:"<<year<<"/"<<month<<"/"<<day<<endl;
}
void BirthDate::setbirthday(int y,int m,int d)
{
    year=y;
    month=m;
    day=d;
}
class Teacher

{

public:

    Teacher(int,string,char);

    void display();

private:

    int num;

    string name;

    char sex;

};
Teacher::Teacher(int n,string na,char s):num(n),name(na),sex(s){}
void Teacher::display()
{
    cout<<"num:"<<num<<endl;
    cout<<"name:"<<name<<endl;
    cout<<"sex:"<<sex<<endl;
}
 
class Professor:public Teacher

{

public:

    Professor(int,string,char,BirthDate);

    void display();

    void setbirthday(int,int,int);

private:

    BirthDate birthday;

};
Professor::Professor(int n,string na,char s,BirthDate(b)):Teacher(n,na,s),birthday(b){}
void Professor::display()
{
    Teacher::display();
    birthday.display();
}
void Professor::setbirthday(int y,int m,int d)
{
    birthday.setbirthday(y, m, d);
}
/* C++代码 */

int main()

{

    int num;

    string name;

    char sex;

    int year,month,day;

    cin>>num>>name>>sex;

    cin>>year>>month>>day;

    Professor prof(num,name,sex,BirthDate(year,month,day));

    cin>>year>>month>>day;

    prof.setbirthday(year,month,day);

    prof.display();

    return 0;

}
 

学习总结：主要子对象哦