OJ 继承与组合

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 

#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;
};
class Teacher
{
public:
Teacher(int,string,char);
void display();
private:
int num;
string name;
char sex;
};
class Professor:public Teacher
{
public:
Professor(int,string,char,BirthDate);
void display();
void setbirthday(int,int,int);
private:
BirthDate birthday;

};
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;
}
Teacher::Teacher(int n,string nam,char s):num(n),name(nam),sex(s){}
void Teacher::display()
{
cout<<"num:"<<num<<endl;
cout<<"name:"<<name<<endl;
cout<<"sex:"<<sex<<endl;
}
Professor::Professor(int n,string nam,char s,BirthDate f):Teacher(n,nam,s),birthday(f){}
void Professor::display()
{
Teacher::display();
birthday.display();

}
void Professor::setbirthday(int y,int m,int d)
{
birthday.setbirthday(y,m,d);
}
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;
}

运行结果：

 



这个继承与组合 简直了