任务一：
代码：
t.h:
1 #pragma once
2
3 #include <string>
4
5 // 类T: 声明
6 class T {
7 // 对象属性、方法
8 public:
9 T(int x = 0, int y = 0); // 普通构造函数
10 T(const T &t); // 复制构造函数
11 T(T &&t); // 移动构造函数
12 ~T(); // 析构函数
13
14 void adjust(int ratio); // 按系数成倍调整数据
15 void display() const; // 以(m1, m2)形式显示T类对象信息
16
17 private:
18 int m1, m2;
19
20 // 类属性、方法
21 public:
22 static int get_cnt(); // 显示当前T类对象总数
23
24 public:
25 static const std::string doc; // 类T的描述信息
26 static const int max_cnt; // 类T对象上限
27
28 private:
29 static int cnt; // 当前T类对象数目
30
31 // 类T友元函数声明
32 friend void func();
33 };
34
35 // 普通函数声明
36 void func();
View Code
t.cpp:
1 // 类T: 实现
2 // 普通函数实现
3
4 #include "t.h"
5 #include <iostream>
6 #include <string>
7
8 using std::cout;
9 using std::endl;
10 using std::string;
11
12 // static成员数据类外初始化
13 const std::string T::doc{"a simple class sample"};
14 const int T::max_cnt = 999;
15 int T::cnt = 0;
16
17
18 // 对象方法
19 T::T(int x, int y): m1{x}, m2{y} {
20 ++cnt;
21 cout << "T constructor called.\n";
22 }
23
24 T::T(const T &t): m1{t.m1}, m2{t.m2} {
25 ++cnt;
26 cout << "T copy constructor called.\n";
27 }
28
29 T::T(T &&t): m1{t.m1}, m2{t.m2} {
30 ++cnt;
31 cout << "T move constructor called.\n";
32 }
33
34 T::~T() {
35 --cnt;
36 cout << "T destructor called.\n";
37 }
38
39 void T::adjust(int ratio) {
40 m1 *= ratio;
41 m2 *= ratio;
42 }
43
44 void T::display() const {
45 cout << "(" << m1 << ", " << m2 << ")" ;
46 }
47
48 // 类方法
49 int T::get_cnt() {
50 return cnt;
51 }
52
53 // 友元
54 void func() {
55 T t5(42);
56 t5.m2 = 2049;
57 cout << "t5 = "; t5.display(); cout << endl;
58 }
View Code
c.cpp:
1 #include "t.h"
2 #include <iostream>
3
4 using std::cout;
5 using std::endl;
6
7 void test();
8
9 int main() {
10 test();
11 cout << "\nmain: \n";
12 cout << "T objects'current count: " << T::get_cnt() << endl;
13 }
14
15 void test() {
16 cout << "test class T: \n";
17 cout << "T info: " << T::doc << endl;
18 cout << "T objects'max count: " << T::max_cnt << endl;
19 cout << "T objects'current count: " << T::get_cnt() << endl << endl;
20
21
22 T t1;
23 cout << "t1 = "; t1.display(); cout << endl;
24
25 T t2(3, 4);
26 cout << "t2 = "; t2.display(); cout << endl;
27
28 T t3(t2);
29 t3.adjust(2);
30 cout << "t3 = "; t3.display(); cout << endl;
31
32 T t4(std::move(t2));
33 cout << "t3 = "; t4.display(); cout << endl;
34
35 cout << "T objects'current count: " << T::get_cnt() << endl;
36
37 func();
38 }
View Code
截图：
可能是函数形式的问题；
不可以运行。
task2
代码：
Complex.h:
#pragma once
#include<string>
class Complex{
public:
static const std::string doc;
Complex(double r=0,double i=0);
Complex(const Complex &c);
const double get_real();
const double get_imag();
Complex add(const Complex &c);
friend Complex add(const Complex &c1,const Complex &c2);
friend bool is_equal(const Complex &c1,const Complex &c2);
friend bool is_not_equal(const Complex &c1,const Complex &c2);
friend double abs(const Complex &c);
friend void output(const Complex &c);
private:
double real;
double imag;
};
View Code
Complex.cpp:
1 #include "Complex.h"
2 #include<cmath>
3 #include<string>
4 #include<iostream>
5
6 using namespace std;
7
8 const string Complex::doc{"a simplified Complex class"};
9
10 Complex::Complex(double r,double i):real{r},imag{i}{}
11
12 Complex::Complex(const Complex &c):real{c.real},imag{c.imag}{}
13
14 const double Complex::get_real(){
15 return real;
16 }
17
18 const double Complex::get_imag(){
19 return imag;
20 }
21
22 Complex Complex::add(const Complex &c){
23 Complex x;
24 x.real=x.real+c.real;
25 x.imag=x.imag+c.imag;
26 return x;
27 }
28
29 Complex add(const Complex &c1,const Complex &c2){
30 return Complex(c1.real+c2.real,c1.imag+c2.imag);
31 }
32
33 bool is_equal(const Complex &c1,const Complex &c2){
34 if(c1.real==c2.real&&c1.imag==c2.imag){
35 return true;
36 }
37 }
38
39 bool is_not_equal(const Complex &c1,const Complex &c2){
40 if(c1.real==c2.real&&c1.imag==c2.imag){
41 return false;
42 }
43 }
44
45 double abs(const Complex &c){
46 return sqrt(c.real*c.real+c.imag*c.imag);
47 }
48
49 void output(const Complex &c){
50 cout<<c.real<<"+"<<c.imag<<"i"<<endl;
51 }
View Code
task2.cpp:
1 #include "Complex.h"
2 #include <iostream>
3
4 using std::cout;
5 using std::endl;
6 using std::boolalpha;
7
8 void test() {
9 cout << "类成员测试: " << endl;
10 cout << Complex::doc << endl;
11
12 cout << endl;
13
14 cout << "Complex对象测试: " << endl;
15 Complex c1;
16 Complex c2(3, -4);
17 const Complex c3(3.5);
18 Complex c4(c3);
19
20 cout << "c1 = "; output(c1); cout << endl;
21 cout << "c2 = "; output(c2); cout << endl;
22 cout << "c3 = "; output(c3); cout << endl;
23 cout << "c4 = "; output(c4); cout << endl;
24 cout << "c4.real = " << c4.get_real() << ", c4.imag = " << c4.get_imag() << endl;
25
26 cout << endl;
27
28 cout << "复数运算测试: " << endl;
29 cout << "abs(c2) = " << abs(c2) << endl;
30 c1.add(c2);
31 cout << "c1 += c2, c1 = "; output(c1); cout << endl;
32 cout << boolalpha;
33 cout << "c1 == c2 : " << is_equal(c1, c2) << endl;
34 cout << "c1 != c3 : " << is_not_equal(c1, c3) << endl;
35 c4 = add(c2, c3);
36 cout << "c4 = c2 + c3, c4 = "; output(c4); cout << endl;
37 }
38
39 int main() {
40 test();
41 }
View Code
截图：
task3
代码：
1 #include <iostream>
2 #include <complex>
3
4 using std::cout;
5 using std::endl;
6 using std::boolalpha;
7 using std::complex;
8
9 void test() {
10 cout << "标准库模板类comple测试: " << endl;
11 complex<double> c1;
12 complex<double> c2(3, -4);
13 const complex<double> c3(3.5);
14 complex<double> c4(c3);
15
16 cout << "c1 = " << c1 << endl;
17 cout << "c2 = " << c2 << endl;
18 cout << "c3 = " << c3 << endl;
19 cout << "c4 = " << c4 << endl;
20 cout << "c4.real = " << c4.real() << ", c4.imag = " << c4.imag() << endl;
21 cout << endl;
22
23 cout << "复数运算测试: " << endl;
24 cout << "abs(c2) = " << abs(c2) << endl;
25 c1 += c2;
26 cout << "c1 += c2, c1 = " << c1 << endl;
27 cout << boolalpha;
28 cout << "c1 == c2 : " << (c1 == c2) << endl;
29 cout << "c1 != c3 : " << (c1 != c3) << endl;
30 c4 = c2 + c3;
31 cout << "c4 = c2 + c3, c4 = " << c4 << endl;
32 }
33
34 int main() {
35 test();
36 }
View Code
截图：
在库中提供了输出函数，可直接输出复数形式。
task4
代码：
Fraction.h:
1 #pragma once
2 #include<string>
3 using namespace std;
4 class Fraction{
5 public:
6 static const string doc;
7 public:
8 Fraction(int x,int y=1);
9 Fraction(const Fraction &f);
10 const int get_up();
11 const int get_down();
12 Fraction negative();
13 public:
14 friend void output(const Fraction &f);
15 friend Fraction add(Fraction f1,Fraction f2);
16 friend Fraction sub(Fraction f1,Fraction f2);
17 friend Fraction mul(Fraction f1,Fraction f2);
18 friend Fraction div(Fraction f1,Fraction f2);
19 private:
20 int up;
21 int down;
22 };
View Code
Fraction.cpp:
1 #include<iostream>
2 #include"Fraction.h"
3 #include<string>
4 #include<cmath>
5
6 using namespace std;
7
8 int max(int x,int y){
9 int a=abs(x);
10 int b=abs(y);
11 while (b)
12 {
13 int tmp=a;
14 a=b;
15 b=tmp%b;
16 }
17 return a;
18 }
19
20 const string Fraction::doc="Fraction类 v 0.01版.\n目前仅支持分数对象的构造，输出，加/减/乘/除运算.\n";
21 Fraction::Fraction(int x,int y):up{x},down{y}{}
22
23 Fraction::Fraction(const Fraction &f):up{f.up},down{f.down}{}
24
25 const int Fraction::get_up(){
26 return up/max(up,down);
27 }
28
29 const int Fraction::get_down(){
30 return down/max(up,down);
31 }
32
33 Fraction Fraction::negative(){
34 int new_up=-up;
35 Fraction f(new_up,down);
36 return f;
37 }
38
39 void output(const Fraction &f){
40 if (f.down==0)
41 {
42 cout<<"分母不能为0";
43 return ;
44 }
45 int new_down=f.down/max(f.up,f.down);
46 if (new_down==1)
47 cout<<f.up/max(f.up,f.down);
48 else if (f.up*f.down>0)
49 cout<<abs(f.up)/max(f.up,f.down)<<"/"<<abs(f.down)/max(f.up,f.down);
50 else
51 cout<<"-"<<abs(f.up)/max(f.up,f.down)<<"/"<<abs(f.down)/max(f.up,f.down);
52 }
53
54 Fraction add(const Fraction f1,const Fraction f2)
55 {
56 int new_down=f1.down*f2.down;
57 int new_up=f1.up*f2.down+f2.up*f1.down;
58 new_up/=max(new_up,new_down);new_down/=max(new_up,new_down);
59 Fraction f(new_up,new_down);
60 return f;
61 }
62
63 Fraction sub(Fraction f1,Fraction f2)
64 {
65 int new_down=f1.down*f2.down;
66 int new_up=f1.up*f2.down-f2.up*f1.down;
67 new_up/=max(new_up,new_down);new_down/=max(new_up,new_down);
68 Fraction f(new_up,new_down);
69 return f;
70 }
71
72 Fraction mul(Fraction f1,Fraction f2)
73 {
74 int new_up=f1.up*f2.up;
75 int new_down=f1.down*f2.down;
76 new_up/=max(new_up,new_down);new_down/=max(new_up,new_down);
77 Fraction f(new_up,new_down);
78 return f;
79 }
80
81 Fraction div(Fraction f1,Fraction f2)
82 {
83
84 int new_up=f1.up*f2.down;
85 int new_down=f1.down*f2.up;
86 new_up/=max(new_up,new_down);new_down/=max(new_up,new_down);
87 Fraction f(new_up,new_down);
88 return f;
89 }
View Code
task4.cpp:
1 #include "Fraction.h"
2 #include <iostream>
3
4 using std::cout;
5 using std::endl;
6
7
8 void test1() {
9 cout << "Fraction类测试: " << endl;
10 cout << Fraction::doc << endl << endl;
11
12 Fraction f1(5);
13 Fraction f2(3, -4), f3(-18, 12);
14 Fraction f4(f3);
15 cout << "f1 = "; output(f1); cout << endl;
16 cout << "f2 = "; output(f2); cout << endl;
17 cout << "f3 = "; output(f3); cout << endl;
18 cout << "f4 = "; output(f4); cout << endl;
19
20 Fraction f5(f4.negative());
21 cout << "f5 = "; output(f5); cout << endl;
22 cout << "f5.get_up() = " << f5.get_up() << ", f5.get_down() = " << f5.get_down() << endl;
23
24 cout << "f1 + f2 = "; output(add(f1, f2)); cout << endl;
25 cout << "f1 - f2 = "; output(sub(f1, f2)); cout << endl;
26 cout << "f1 * f2 = "; output(mul(f1, f2)); cout << endl;
27 cout << "f1 / f2 = "; output(div(f1, f2)); cout << endl;
28 cout << "f4 + f5 = "; output(add(f4, f5)); cout << endl;
29 }
30
31 void test2() {
32 Fraction f6(42, 55), f7(0, 3);
33 cout << "f6 = "; output(f6); cout << endl;
34 cout << "f7 = "; output(f7); cout << endl;
35 cout << "f6 / f7 = "; output(div(f6, f7)); cout << endl;
36 }
37
38 int main() {
39 cout << "测试1: Fraction类基础功能测试\n";
40 test1();
41
42 cout << "\n测试2: 分母为0测试: \n";
43 test2();
44 }
View Code
截图：
task5
代码：
account.h:
1 #ifndef __ACCOUNT_H__
2 #define __ACCOUNT_H__
3
4 class SavingAccount{
5 private:
6 int id;
7 double balance;
8 double rate;
9 double lastData;
10 double accumulation;
11
12 static double total;
13
14 void record(int data,double amount);
15 double accumulate(int data) const
16 {
17 return accumulation+balance*(data-lastData);
18 }
19 public:
20 SavingAccount(int data,int id,double rate);
21 int getId() const {return id;}
22 double getBalance() const {return balance;}
23 double getRate() const {return rate;}
24 static double getTotal() {return total;}
25 void deposit(int data,double amount);
26 void withdraw(int data,double amount);
27 void settle(int data);
28 void show() const;
29 };
30 #endif
View Code
account.cpp:
1 #include <bits/stdc++.h>
2 #include "account.h"
3 using namespace std;
4
5 double SavingAccount::total=0;
6 SavingAccount::SavingAccount(int data,int id,double rate)
7 :id(id),balance(0),rate(rate),lastData(data),accumulation(0)
8 {
9 cout<<data<<"\t#"<<id<<"is created"<<endl;
10 }
11
12 void SavingAccount::record(int data,double amount)
13 {
14 accumulation=accumulate(data);
15 lastData=data;
16 amount=floor(amount*100+0.5)/100;
17 balance+=amount;
18 total+=amount;
19 cout<<data<<"\t#"<<id<<"\t"<<amount<<"\t"<<balance<<endl;
20 }
21
22 void SavingAccount::deposit(int data,double amount)
23 {
24 record(data,amount);
25 }
26
27 void SavingAccount::withdraw(int data,double amount)
28 {
29 if (amount>getBalance())
30 cout<<"Error:not enough money"<<endl;
31 else
32 record(data,-amount);
33 }
34
35 void SavingAccount::settle(int data)
36 {
37 double interest=accumulate(data)*rate/365;
38 if (interest!=0)
39 record(data,interest);
40 accumulation=0;
41 }
42 void SavingAccount::show() const
43 {
44 cout<<"#"<<id<<"\tBalance:"<<balance;
45 }
View Code
main.cpp:
#include "account.h"
#include <iostream>
using namespace std;
int main ()
{
SavingAccount sa0(1,21325302,0.015);
SavingAccount sa1(1,58320212,0.015);
sa0.deposit(5,5000);
sa1.deposit(25,10000);
sa0.deposit(45,5500);
sa1.deposit(60,4000);
sa0.settle(90);
sa1.settle(90);
sa0.show();cout<<endl;
sa1.show();cout<<endl;
cout<<"Total:"<<SavingAccount::getTotal()<<endl;
return 0;
}
截图：
标签：const,int,double,Complex,实验,Fraction,include From： https://www.cnblogs.com/sjx-/p/18494476