任务一
t.h
1 #ifndef T_H
2 #define T_H
3 #include <iostream>
4 #include <string>
5 using namespace std;
6 class T
7 {
8 public:
9 T(int x=0,int y=0);
10 T(const T&t);
11 T(T &&t);
12 ~T();
13 void set_m1(int x);
14 int get_m1() const;
15 int get_m2() const;
16 void display() const;
17 friend void func();
18 private:
19 int m1,m2;
20 public:
21 static void disply_count();
22 static const string doc;
23 static const int max_count;
24 private:
25 static int count;
26 };
27 void func();
28 #endif
View Code
t.cpp
1 #include "t1.h"
2 const string T::doc{"a simple class"};
3 const int T::max_count=99;
4 int T::count=0;
5 T::T(int x,int y):m1{x},m2{y}
6 {
7 ++count;
8 cout<<"constructor called \n";
9 }
10 T::T(const T &t):m1{t.m1},m2{t.m2}
11 {
12 ++count;
13 cout<<"copy construcyor called \n";
14 }
15 T::T(T &&t):m1{t.m1},m2{t.m2}
16 {
17 ++count;
18 cout<<"move constructor called \n";
19 }
20 T::~T()
21 {
22 --count;
23 cout<<"destructor called \n";
24 }
25 void T::set_m1(int x)
26 {
27 m1=x;
28 }
29 int T::get_m1() const
30 {
31 return m1;
32
33 }
34 int T::get_m2() const
35 {
36 return m2;
37 }
38 void T::display() const
39 {
40 cout<<m1<<","<<m2<<endl;
41 }
42 void T::disply_count()
43 {
44 cout<<"T objects:"<<count<<endl;
45 }
46 void func()
47 {
48 T t1;
49 t1.set_m1(55);
50 t1.m2=77;
51 t1.display();
52 }
View Code
main.cpp
1 #include "t1.h"
2 void test()
3 {
4 cout << "T class info: " << T::doc << endl;
5 cout << "T objects max_count: " << T::max_count << endl;
6 T::disply_count();
7 T t1;
8 t1.display();
9 t1.set_m1(42);
10 T t2{t1};
11 t2.display();
12 T t3{std::move(t1)};
13 t3.display();
14 t1.display();
15 T::disply_count();
16 }
17 int main()
18 {
19 cout<<"===========T=================="<<endl;
20 test();
21 cout<<endl;
22 cout<<"===================func()==============="<<endl;
23 func();
24 }
View Code
任务二
t.hpp
1 #pragma once
2 #include <iostream>
3 #include <string>
4 #include <iomanip>
5 using std::string;
6 using std::cout;
7 using std::endl;
8 using std::setfill;
9 using std::setw;
10 using std::left;
11 using std::right;
12 using std::to_string;
13 struct Date
14 {
15 int year;
16 int month;
17 int day;
18 };
19 // Employee类的声明
20 class Employee
21 {
22 public:
23 Employee();
24 Employee(string name0, double salary0, int y, int m, int d = 1);
25 void set_info(string name0, double salary0, int y, int m, int d = 1);
26 // 设置雇员信息
27 string get_name() const; // 获取雇员姓名
28 double get_salary() const; // 获取雇员薪水
29 void display_info() const; // 显示雇员信息
30 void update_salary(double s); // 更新雇员薪水
31 void update_hire_date(int y, int m, int d); // 更新雇佣日期
32 void raise_salary(double by_percent); // 计算提薪加成
33 public:
34 static void display_count(); // 类方法，显示雇员总数
35 private:
36 string id; // 雇员工号
37 string name; // 雇员姓名
38 double salary; // 雇员薪水
39 Date hire_date; // 雇员雇佣日期
40 public:
41 static const string doc; // 类属性，用于描述类
42 private:
43 static int count; // 类属性，用于记录雇员总人数
44 };
45 const string Employee::doc {"a simple Employee class"};
46 int Employee::count = 0;
47 // 默认构造函数
48 Employee::Employee(): id{ to_string(count+1) }
49 {
50 ++count;
51 }
52 // 带参数的构造函数
53 Employee::Employee(string name0, double salary0, int y, int m, int d):id{to_string(count+1)}, name{name0}, salary{salary0},
54 hire_date{y, m, d}
55 {
56 ++count;
57 }
58 // 设置员工信息
59 void Employee::set_info(string name0, double salary0, int y, int m, int d)
60 {
61 name = name0;
62 salary = salary0;
63 hire_date.year = y;
64 hire_date.month = m;
65 hire_date.day = d;
66 }
67 // 获取员工姓名
68 string Employee::get_name() const
69 {
70 return name;
71 }
72 // 获取员工薪水
73 double Employee::get_salary() const
74 {
75 return salary;
76 }
77 // 显示雇员信息
78 void Employee::display_info() const {
79 cout << left << setw(15) << "id: " << id << endl;
80 cout << setw(15) << "name: " << name << endl;
81 cout << setw(15) << "salary: " << salary << endl;
82 cout << setw(15) << "hire_date: " << hire_date.year << "-";
83 cout << std::right << setfill('0') << setw(2) << hire_date.month << "-"<< setw(2) << hire_date.day;
84 cout << setfill(' '); // 恢复到默认空格填充
85 }
86 // 更新薪水
87 void Employee::update_salary(double s)
88 {
89 salary = s;
90 }
91 // 更新雇佣日期
92 void Employee::update_hire_date(int y, int m, int d)
93 {
94 hire_date.year = y;
95 hire_date.month = m;
96 hire_date.day = d;
97 }
98 // 雇员提薪加成
99 // by_percent是提升比例
100 void Employee::raise_salary(double by_percent)
101 {
102 double raise = salary * by_percent / 100;
103 salary += raise;
104 }
105 // 类方法
106 // 显示雇员总数
107 void Employee::display_count()
108 {
109 cout << "there are " << count << " employees\n";
110 }
View Code
main.cpp
1 #include "t2.h"
2 #include <iostream>
3 // 测试：Employee类
4 void test()
5 {
6 using std::cout;
7 using std::endl;
8 cout << Employee::doc << endl << endl;
9 Employee employee1;
10 employee1.set_info("Sam", 30000, 2015, 1, 6);
11 employee1.update_hire_date(2019, 6, 30);
12 employee1.update_salary(35000);
13 employee1.display_info();
14 cout << endl << endl;
15 Employee employee2{"Tony", 20000, 2023, 3, 16};
16 employee2.raise_salary(15); // 提成15%
17 employee2.display_info();
18 cout << endl << endl;
19 Employee::display_count();
20 }
21 int main()
22 {
23 test();
24 }
View Code
任务三
t3.h
1 #pragma once
2 #include <iostream>
3 #include <cmath>
4 using namespace std;
5 class Complex
6 {
7 public:
8 Complex(double a = 0, double b = 0) :a(a), b(b) {}
9 Complex(const Complex& x) ;
10 double get_real() { return a; }
11 double get_imag() const { return b; }
12 void show() const;
13 void add(const Complex &z);
14 ~Complex(){};
15 friend Complex add(const Complex &k,const Complex &l);
16 friend bool is_equal(const Complex &asd,const Complex &zxc);
17 friend double abs(const Complex &x);
18
19 private:
20 double a, b;
21 };
View Code
t3.cpp
1 #include "t3.h"
2 Complex::Complex(const Complex& x)
3 {
4 a = x.a;
5 b = x.b;
6 }
7 void Complex::show() const
8 {
9 if (b > 0)
10 cout << a << "+" << b << "i" ;
11 else if (b < 0)
12 cout << a << b << "i" ;
13 else
14 cout << a ;
15 }
16 void Complex::add(const Complex &z)
17 {
18 a = a + z.a;
19 b = b + z.b;
20 }
21 Complex add(const Complex &k,const Complex &l)
22 {
23 Complex s;
24 s.a=k.a+l.a;s.b=k.b+l.b;
25 return (s);
26 }
27 bool is_equal(const Complex &asd,const Complex &zxc)
28 {
29 if (asd.a == zxc.a && asd.b == zxc.b)
30 return (true);
31 else
32 return (false);
33 }
34 double abs(const Complex &x)
35 {
36 return(sqrt(x.a * x.a + x.b * x.b));
37 }
View Code
main3.cpp
1 #include "t3.h"
2 void test()
3 {
4 using namespace std;
5 Complex c1(3, -4);
6 const Complex c2(4.5);
7 Complex c3(c1);
8 cout << "c1 = ";
9 c1.show();
10 cout << endl;
11 cout << "c2 = ";
12 c2.show();
13 cout << endl;
14 cout << "c2.imag = " << c2.get_imag() << endl;
15 cout << "c3 = ";
16 c3.show();
17 cout << endl;
18 cout << "abs(c1) = ";
19 cout << abs(c1) << endl;
20 cout << boolalpha;
21 cout << "c1 == c3 : " << is_equal(c1, c3) << endl;
22 cout << "c1 == c2 : " << is_equal(c1, c2) << endl;
23 Complex c4;
24 c4 = add(c1, c2);
25 cout << "c4 = c1 + c2 = ";
26 c4.show();
27 cout << endl;
28 c1.add(c2);
29 cout << "c1 += c2, " << "c1 = ";
30 c1.show();
31 cout << endl;
32 }
33 int main()
34 {
35 test();
36 }
View Code
任务四
task4.cpp
1 using namespace std;
2 class User
3 {
4 public:
5 User(string name, string passwd = "111111", string email = ""):name{name},passwd{passwd},email{email}{n++;}
6 User(User& x);
7 string set_email();
8 void change_passwd();
9 void print_info();
10 static int print_n();
11 ~User(){--n;}
12 private:
13 string name;
14 string passwd;
15 string email;
16 static int n;
17 };
18 User::User(User& x)
19 {
20 name = x.name; passwd = x.passwd; email = x.email;
21 }
22 string User::set_email()
23 {
24 cout << "Enter email address:";
25 cin >> email;
26 cout<< "email is set successfully..." << endl;
27 }
28 int User::n=0;
29 void User::change_passwd()//修改密码
30 {
31 for (int i = 0; i < 3; i++)
32 {
33 if(i==0)
34 cout << "Enter old password:";
35 cin >> passwd;
36 if (passwd == "111111")
37 {
38 cout<<"Enter new passwd:";
39 cin >> passwd;
40 cout << "new passwd is set successfilly" << endl;
41 break;
42 }
43 else if(i<2)
44 cout<<"Password input error.Plase re-enter it again:";
45 else
46 cout<<"assword input error.Plase try after while";
47 }
48 cout<<endl;
49 }
50 int User::print_n()
51 {
52 cout<<"there are "<<n<<"users"<<endl;
53 }
54 void User::print_info()
55 {
56 string s(passwd.size(),'*');
57 cout<<"name:"<<name<<endl;
58 cout<<"passwd:"<< s<<endl;
59 cout<<"email:"<<email<<endl;
60 }
View Code
main4.cpp
1 #include "t4.h"
2 #include <iostream>
3 void test()
4 {
5 using std::cout;
6 using std::endl;
7 cout << "testing 1......\n";
8 User user1("Jonny", "92197", "[email protected]");
9 user1.print_info();
10 cout << endl<< "testing 2......\n\n";
11 User user2("殷润哲");user2.print_info();
12 user2.change_passwd();
13 user2.set_email();
14 user2.print_info();
15 cout << endl;
16 User::print_n();
17 }
18 int main()
19 {
20 test();
21 }
View Code
任务五
account.h
1 //account.h
2 class SavingsAccount
3 {
4 private:
5 int id;
6 double balance;
7 double rate;
8 int lastDate;
9 double accumulation;
10 static double total;
11 void record(int data,double amount);
12 double accumulate(int date)const
13 {
14 return accumulation+balance*(date-lastDate);
15 }
16 public:
17 SavingsAccount(int data,int id,double rate);
18 int getId()const{return id;}
19 double getBalance()const{return balance;}
20 double getRate()const{return rate;}
21 static double getTotal(){return total;}
22 void deposit(int date,double amount);
23 void withdraw(int data,double amount);
24 void settle(int date);
25 void show() const;
26 };
View Code
account.cpp
1 //account.cpp
2 #include"account.h"
3 #include<cmath>
4 #include<iostream>
5 using namespace std;
6 double SavingsAccount::total=0;
7 SavingsAccount::SavingsAccount(int date,int id,double rate):id(id),balance(0),rate(rate),lastDate(date),accumulation(0)
8 {
9 cout<<date<<"\t#"<<id<<"is created"<<endl;
10 }
11 void SavingsAccount::record(int date,double amount)
12 {
13 accumulation=accumulate(date);
14 lastDate=date;
15 amount=floor(amount*100+0.5)/100;
16 balance+=amount;
17 total+=amount;
18 cout<<date<<"\t#"<<id<<"\t"<<amount<<"\t"<<balance<<endl;
19 }
20 void SavingsAccount::deposit(int date,double amount)
21 {
22 record(date,amount);
23 }
24 void SavingsAccount::withdraw(int date,double amount)
25 {
26 if(amount>getBalance())
27 cout<<"Error:not enough money"<<endl;
28 else
29 record(date,-amount);
30 }
31 void SavingsAccount::settle(int data)
32 {
33 double interest=accumulate(data)*rate/365;
34 if(interest!=0)
35 record(data,interest);
36 accumulation=0;
37 }
38 void SavingsAccount::show() const
39 {
40 cout<<"#"<<id<<"\tBalance:"<<balance;
41 }
View Code
5_11.cpp
1 //account.cpp
2 #include"account.h"
3 #include<cmath>
4 #include<iostream>
5 using namespace std;
6 double SavingsAccount::total=0;
7 SavingsAccount::SavingsAccount(int date,int id,double rate):id(id),balance(0),rate(rate),lastDate(date),accumulation(0)
8 {
9 cout<<date<<"\t#"<<id<<"is created"<<endl;
10 }
11 void SavingsAccount::record(int date,double amount)
12 {
13 accumulation=accumulate(date);
14 lastDate=date;
15 amount=floor(amount*100+0.5)/100;
16 balance+=amount;
17 total+=amount;
18 cout<<date<<"\t#"<<id<<"\t"<<amount<<"\t"<<balance<<endl;
19 }
20 void SavingsAccount::deposit(int date,double amount)
21 {
22 record(date,amount);
23 }
24 void SavingsAccount::withdraw(int date,double amount)
25 {
26 if(amount>getBalance())
27 cout<<"Error:not enough money"<<endl;
28 else
29 record(date,-amount);
30 }
31 void SavingsAccount::settle(int data)
32 {
33 double interest=accumulate(data)*rate/365;
34 if(interest!=0)
35 record(data,interest);
36 accumulation=0;
37 }
38 void SavingsAccount::show() const
39 {
40 cout<<"#"<<id<<"\tBalance:"<<balance;
41 }
View Code
标签：const,string,int,double,void,实验,include From： https://www.cnblogs.com/dmsx/p/17768629.html