main.cpp

#include <iostream>
#include "Person.h"
using namespace std;

int main()
{
    Person myPerson;
    // Person myPerson("S.M.Wang", 070145, "莲花路200号");

    cout << "请输入姓名:" ;
    string name;
    cin >> name;

    cout << "请输入ID:" ;
    int id;
    cin >> id;

    cout << "请输入住址:" ;
    string address;
    cin >> address;

    Date myDate;

    cout << "请输入生日年:" ;
    int year;
    cin >> year;

    cout << "请输入生日月:" ;
    int month;
    cin >> month;

    cout << "请输入生日天:" ;
    int day;
    cin >> day;

    myPerson.setName(name);
    myPerson.setID(id);
    myPerson.setAddress(address);

    myDate.setYear(year);
    myDate.setMonth(month);
    myDate.setDay(day);

    myPerson.setBirthday(myDate); // 调用的形参为类

    myPerson.print();
    return 0;
}

Person.h

#include <iostream>
#include "Date.h"
using namespace std;

class Person
{
public:
    Person();
    Person(string name, int id, string address);
    ~Person();

    void setPerson(string name, int id, string address);
    void setName(string name);
    void setID(int id);
    void setAddress(string address);
    void setBirthday(Date d);

    string getName();
    int getID();
    string getAddress();
    Date getBirthday();

    void print(); // outPutResult
private:
    string Name;
    int ID;
    string Address;
    Date Birthday;
};

Person.cpp

#include "Person.h"
#include <iostream>
using namespace std;

Person::Person()
{
    Name = "S.M.Wang";
    ID = 070145;
    Address = "莲花路200号";
}

Person::Person(string name, int id, string address)
{
    setPerson(name, id, address);
}

Person::~Person()
{
    //cout << "object Destructor is called" << endl;
}


void Person::setPerson(string name, int id, string address)
{
    Name = name;
    ID = id;
    Address = address;
}


void Person::setName(string name)
{
    Name = name;
}

void Person::setID(int id)
{
    ID = id;
}

void Person::setAddress(string address)
{
    Address = address;
}

string Person::getName()
{
    return Name;
}

int Person::getID()
{
    return ID;
}

string Person::getAddress()
{
    return Address;
}


void Person::setBirthday(Date d) // 调用的形参是类
{
    Birthday = d;
}

Date Person::getBirthday() // 返回的是类
{
    return Birthday;
}

void Person::print()
{
    cout << "Name:" << getName() << endl;
    cout << "ID:" << getID() << endl;
    cout << "Address:" << getAddress() << endl;
    
    cout << "Birthday:" << getBirthday().getYear(); // getBirthday()返回的是类，再调用类中的子函数满足cout的返回值。
    cout << " " << getBirthday().getMonth();
    cout << " " << getBirthday().getDay() << endl;
}

Date.h

#include <iostream>

using namespace std;


class Date
{
    friend class Person;
public:
    Date();
    Date(int y, int m, int d);
    ~Date();

    void setYear(int y);
    void setMonth(int m);
    void setDay(int d);

    int getYear();
    int getMonth();
    int getDay();

    void print();
private:
    int Year;
    int Month;
    int Day;

};

Date.cpp

#include "Date.h"
#include <iostream>
using namespace std;

Date::Date()
{
    Year = 0;
    Month = 0;
    Day = 0;
}

Date::Date(int year, int month, int day)
{
    setYear(year);
    setMonth(month);
    setDay(day);
}

Date::~Date()
{
    //cout << "object Destructor is called" << endl;
}


void Date::setYear(int year)
{
    Year = year;
}

void Date::setMonth(int month)
{
    Month = month;
}

void Date::setDay(int day)
{
    Day = day;
}

int Date::getYear()
{
    return Year;
}

int Date::getMonth()
{
    return Month;
}

int Date::getDay()
{
    return Day;
}

void Date::print()
{
    cout << "Year :" << getYear() << endl;
    cout << "Month :" << getMonth() << endl;
    cout << "Day :" << getDay() << endl;
}

Result: