用c++第一题：定义一个满足如下要求的Date 类 （1）用下面的格式输出日期： 日/月/年 （2）可运行在日期上加一天操作； （3）设置日期。第二题：创建一个Employee类，该类中有字符数组，表示姓名、街道地址、市、省和邮政编码 把表示构造函数、ChangeNamne()、Display(）的函数原型放在类定义中，构造函数初始化每个成员，Display(）函数把完整的对象数据打印出来。其中的数据成员是保护的，函数是公共的

第一题：

#include <iostream>
using namespace std;

class Date {
private:
    int day, month, year;
    bool isLeapYear(int year) {
        return (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
    }
    int getDaysInMonth(int year, int month) {
        int daysInMonth[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        if (month == 2 && isLeapYear(year)) {
            return 29;
        }
        return daysInMonth[month - 1];
    }
public:
    Date(int day, int month, int year) {
        this->day = day;
        this->month = month;
        this->year = year;
    }
    void display() {
        cout << day << "/" << month << "/" << year << endl;
    }
    void addOneDay() {
        int daysInMonth = getDaysInMonth(year, month);
        if (day < daysInMonth) {
            day++;
        } else {
            day = 1;
            if (month < 12) {
                month++;
            } else {
                month = 1;
                year++;
            }
        }
    }
    void setDate(int day, int month, int year) {
        this->day = day;
        this->month = month;
        this->year = year;
    }
};

int main() {
    Date date(31, 12, 2021);
    date.display();
    date.addOneDay();
    date.display();
    date.setDate(1, 1, 2022);
    date.display();
    return 0;
}

第二题：

#include <iostream>
using namespace std;

class Employee {
protected:
    char name[50];
    char streetAddress[100];
    char city[50];
    char province[50];
    char postalCode[7];
public:
    Employee(char name[], char streetAddress[], char city[], char province[], char postalCode[]) {
        strcpy(this->name, name);
        strcpy(this->streetAddress, streetAddress);
        strcpy(this->city, city);
        strcpy(this->province, province);
        strcpy(this->postalCode, postalCode);
    }
    void changeName(char name[]) {
        strcpy(this->name, name);
    }
    void display() {
        cout << "Name: " << name << endl;
        cout << "Street Address: " << streetAddress << endl;
        cout << "City: " << city << endl;
        cout << "Province: " << province << endl;
        cout << "Postal Code: " << postalCode << endl;
    }
};

int main() {
    Employee employee("John Smith", "123 Main St", "Toronto", "ON", "M1H 1A1");
    employee.display();
    employee.changeName("Jane Doe");
    employee.display();
    return 0;
}