1．创建一个employee类，该类中有姓名、城市、邮政编码等数据成员。成员函数setValue设定对象数据，display函数输出对象数据。 具体要求如下： （1）数据成员设定成private （2）成员函数设定成public （3）建立指针对象，利用指针对象对成员进行引用 （4）将类声明和成员函数的定义分开，放到.h和.cpp中

employee.h

#ifndef EMPLOYEE_H
#define EMPLOYEE_H

#include <string>

class Employee {
private:
    std::string name;
    std::string city;
    std::string postalCode;

public:
    void setValue(const std::string& name, const std::string& city, const std::string& postalCode);
    void display() const;
};

#endif

employee.cpp

#include "employee.h"
#include <iostream>

void Employee::setValue(const std::string& name, const std::string& city, const std::string& postalCode) {
    this->name = name;
    this->city = city;
    this->postalCode = postalCode;
}

void Employee::display() const {
    std::cout << "Name: " << name << std::endl;
    std::cout << "City: " << city << std::endl;
    std::cout << "Postal Code: " << postalCode << std::endl;
}

main.cpp

#include "employee.h"

int main() {
    Employee* employee = new Employee();
    employee->setValue("John Smith", "New York", "10001");
    employee->display();

    delete employee;
    return 0;
}