实验2

#ifndef T_H
#define T_H
#include <iostream>
#include <string>
using namespace std;
class T
{
public:
    T(int x=0,int y=0);
    T(const T&t);
    T(T &&t);
    ~T();
    void set_m1(int x);
    int get_m1() const;
    int get_m2() const;
    void display() const;
    friend void func();
private:
    int m1,m2;
public:
    static void disply_count();
    static const string doc;
    static const int max_count;
private:
    static int count;
};
void func();
#endif

#include "t1.h"
const string T::doc{"a simple class"};
const int T::max_count=99;
int T::count=0;
T::T(int x,int y):m1{x},m2{y}
{
    ++count;
    cout<<"constructor called \n";
}
T::T(const T &t):m1{t.m1},m2{t.m2}
{
    ++count;
    cout<<"copy construcyor called \n";
}
T::T(T &&t):m1{t.m1},m2{t.m2}
{
    ++count;
    cout<<"move constructor called \n";
}
T::~T()
{
    --count;
    cout<<"destructor called \n";
}
void T::set_m1(int x)
{
    m1=x;
}
int T::get_m1() const
{
    return m1;

}
int T::get_m2() const
{
    return m2;
}
void T::display() const
{
    cout<<m1<<","<<m2<<endl;
}
void T::disply_count()
{
    cout<<"T objects:"<<count<<endl;
}
void func()
{
    T t1;
    t1.set_m1(55);
    t1.m2=77;
    t1.display();
}

#include "t1.h"
void test()
{
    cout << "T class info: " << T::doc << endl;
    cout << "T objects max_count: " << T::max_count << endl;
    T::disply_count();
    T t1;
    t1.display();
    t1.set_m1(42);
    T t2{t1};
    t2.display();
    T t3{std::move(t1)};
    t3.display();
    t1.display();
    T::disply_count();
}
int main()
{
    cout<<"===========T=================="<<endl;
    test();
    cout<<endl;
    cout<<"===================func()==============="<<endl;
    func();
}

#pragma once
#include <iostream>
#include <string>
#include <iomanip>
using std::string;
using std::cout;
using std::endl;
using std::setfill;
using std::setw;
using std::left;
using std::right;
using std::to_string;
struct Date
{
    int year;
    int month;
    int day;
};
// Employee类的声明
class Employee
{
public:
    Employee();
    Employee(string name0, double salary0, int y, int m, int d = 1);
    void set_info(string name0, double salary0, int y, int m, int d = 1);
    // 设置雇员信息
    string get_name() const; // 获取雇员姓名
    double get_salary() const; // 获取雇员薪水
    void display_info() const; // 显示雇员信息
    void update_salary(double s); // 更新雇员薪水
    void update_hire_date(int y, int m, int d); // 更新雇佣日期
    void raise_salary(double by_percent); // 计算提薪加成
public:
    static void display_count(); // 类方法，显示雇员总数
    private:
    string id; // 雇员工号
    string name; // 雇员姓名
    double salary; // 雇员薪水
    Date hire_date; // 雇员雇佣日期
public:
    static const string doc; // 类属性，用于描述类
private:
    static int count; // 类属性，用于记录雇员总人数
};
const string Employee::doc {"a simple Employee class"};
int Employee::count = 0;
// 默认构造函数
Employee::Employee(): id{ to_string(count+1) }
{
    ++count;
}
// 带参数的构造函数
Employee::Employee(string name0, double salary0, int y, int m, int d):id{to_string(count+1)}, name{name0}, salary{salary0},
hire_date{y, m, d}
{
    ++count;
}
// 设置员工信息
void Employee::set_info(string name0, double salary0, int y, int m, int d)
{
    name = name0;
    salary = salary0;
    hire_date.year = y;
    hire_date.month = m;
    hire_date.day = d;
}
// 获取员工姓名
string Employee::get_name() const
{
    return name;
}
// 获取员工薪水
double Employee::get_salary() const
{
    return salary;
}
// 显示雇员信息
    void Employee::display_info() const {
    cout << left << setw(15) << "id: " << id << endl;
    cout << setw(15) << "name: " << name << endl;
    cout << setw(15) << "salary: " << salary << endl;
    cout << setw(15) << "hire_date: " << hire_date.year << "-";
    cout << std::right << setfill('0') << setw(2) << hire_date.month << "-"<< setw(2) << hire_date.day;
    cout << setfill(' '); // 恢复到默认空格填充
}
// 更新薪水
void Employee::update_salary(double s)
{
    salary = s;
}
// 更新雇佣日期
void Employee::update_hire_date(int y, int m, int d)
{
    hire_date.year = y;
    hire_date.month = m;
    hire_date.day = d;
}
// 雇员提薪加成
// by_percent是提升比例
void Employee::raise_salary(double by_percent)
{
    double raise = salary * by_percent / 100;
    salary += raise;
}
// 类方法
// 显示雇员总数
void Employee::display_count()
{
    cout << "there are " << count << " employees\n";
}

#include "t2.h"
#include <iostream>
// 测试：Employee类
    void test()
{
    using std::cout;
    using std::endl;
    cout << Employee::doc << endl << endl;
    Employee employee1;
    employee1.set_info("Sam", 30000, 2015, 1, 6);
    employee1.update_hire_date(2019, 6, 30);
    employee1.update_salary(35000);
    employee1.display_info();
    cout << endl << endl;
    Employee employee2{"Tony", 20000, 2023, 3, 16};
    employee2.raise_salary(15); // 提成15%
    employee2.display_info();
    cout << endl << endl;
    Employee::display_count();
}
int main()
{
    test();

 

}

#pragma once
#include <iostream>
#include <cmath>
using namespace std;
class Complex
{
public:
    Complex(double a = 0, double b = 0) :a(a), b(b) {}
    Complex(const Complex& x) ;
    double get_real() { return a; }
    double get_imag() const { return b; }
    void show() const;
    void add(const Complex &z);
    ~Complex(){};
    friend Complex add(const Complex &k,const Complex &l);
    friend bool is_equal(const Complex &asd,const Complex &zxc);
    friend double abs(const Complex &x);

private:
    double a, b;
};

#include "t3.h"
Complex::Complex(const Complex& x)
{
    a = x.a;
    b = x.b;
}
void Complex::show() const
{
    if (b > 0)
        cout << a << "+" << b << "i" ;
    else if (b < 0)
        cout << a << b << "i" ;
    else
        cout << a ;
}
void Complex::add(const Complex &z)
{
    a = a + z.a;
    b = b + z.b;
}
Complex add(const Complex &k,const Complex &l)
{
    Complex s;
    s.a=k.a+l.a;s.b=k.b+l.b;
    return (s);
}
bool is_equal(const Complex &asd,const Complex &zxc)
{
    if (asd.a == zxc.a && asd.b == zxc.b)
        return (true);
    else
        return (false);
}
double abs(const Complex &x)
{
    return(sqrt(x.a * x.a + x.b * x.b));
}

#include "t3.h"
void test()
{
    using namespace std;
    Complex c1(3, -4);
    const Complex c2(4.5);
    Complex c3(c1);
    cout << "c1 = ";
    c1.show();
    cout << endl;
    cout << "c2 = ";
    c2.show();
    cout << endl;
    cout << "c2.imag = " << c2.get_imag() << endl;
    cout << "c3 = ";
    c3.show();
    cout << endl;
    cout << "abs(c1) = ";
    cout << abs(c1) << endl;
    cout << boolalpha;
    cout << "c1 == c3 : " << is_equal(c1, c3) << endl;
    cout << "c1 == c2 : " << is_equal(c1, c2) << endl;
    Complex c4;
    c4 = add(c1, c2);
    cout << "c4 = c1 + c2 = ";
    c4.show();
    cout << endl;
    c1.add(c2);
    cout << "c1 += c2, " << "c1 = ";
    c1.show();
    cout << endl;
}
int main()
{
    test();
}

using namespace std;
class User
{
public:
    User(string name, string passwd = "111111", string email = ""):name{name},passwd{passwd},email{email}{n++;}
    User(User& x);
    string set_email();
    void change_passwd();
    void print_info();
    static int print_n();
    ~User(){--n;}
private:
    string name;
    string passwd;
    string email;
    static int n;
};
User::User(User& x)
{
    name = x.name; passwd = x.passwd; email = x.email;
}
string User::set_email()
{
    cout << "Enter email address:";
    cin >> email;
    cout<< "email is set successfully..." << endl;
}
int User::n=0;
void User::change_passwd()//修改密码
{
    for (int i = 0; i < 3; i++)
{
    if(i==0)
        cout << "Enter old password:";
        cin >> passwd;
    if (passwd == "111111")
    {
        cout<<"Enter new passwd:";
        cin >> passwd;
        cout << "new passwd is set successfilly" << endl;
        break;
    }
    else if(i<2)
        cout<<"Password input error.Plase re-enter it again:";
    else
        cout<<"assword input error.Plase try after while";
}
    cout<<endl;
}
int User::print_n()
{
    cout<<"there are "<<n<<"users"<<endl;
}
void User::print_info()
{
    string s(passwd.size(),'*');
    cout<<"name:"<<name<<endl;
    cout<<"passwd:"<< s<<endl;
    cout<<"email:"<<email<<endl;
}

#include "t4.h"
#include <iostream>
void test()
{
    using std::cout;
    using std::endl;
    cout << "testing 1......\n";
    User user1("Jonny", "92197", "xyz@hotmail.com");
    user1.print_info();
    cout << endl<< "testing 2......\n\n";
    User user2("殷润哲");user2.print_info();
    user2.change_passwd();
    user2.set_email();
    user2.print_info();
    cout << endl;
    User::print_n();
}
int main()
{
    test();
}

//account.h
class SavingsAccount
{
private:
    int id;
    double balance;
    double rate;
    int lastDate;
    double accumulation;
    static double total;
    void record(int data,double amount);
    double accumulate(int date)const
    {
        return accumulation+balance*(date-lastDate);
    }
public:
    SavingsAccount(int data,int id,double rate);
    int getId()const{return id;}
    double getBalance()const{return balance;}
    double getRate()const{return rate;}
    static double getTotal(){return total;}
    void deposit(int date,double amount);
    void withdraw(int data,double amount);
    void settle(int date);
    void show() const;
};

//account.cpp
#include"account.h"
#include<cmath>
#include<iostream>
using namespace std;
double SavingsAccount::total=0;
SavingsAccount::SavingsAccount(int date,int id,double rate):id(id),balance(0),rate(rate),lastDate(date),accumulation(0)
{
    cout<<date<<"\t#"<<id<<"is created"<<endl;
}
void SavingsAccount::record(int date,double amount)
{
    accumulation=accumulate(date);
    lastDate=date;
    amount=floor(amount*100+0.5)/100;
    balance+=amount;
    total+=amount;
    cout<<date<<"\t#"<<id<<"\t"<<amount<<"\t"<<balance<<endl;
}
void SavingsAccount::deposit(int date,double amount)
{
    record(date,amount);
}
void SavingsAccount::withdraw(int date,double amount)
{
    if(amount>getBalance())
        cout<<"Error:not enough money"<<endl;
    else
        record(date,-amount);
}
void SavingsAccount::settle(int data)
{
    double interest=accumulate(data)*rate/365;
    if(interest!=0)
        record(data,interest);
    accumulation=0;
}
void SavingsAccount::show() const
{
    cout<<"#"<<id<<"\tBalance:"<<balance;
}