1 #pragma once
2 #include <iostream>
3
4 using std::cout;
5
6 using std::endl;
7
8 class Point {
9
10 public:
11 Point(int x0 = 0, int y0 = 0);
12 ~Point() = default;
13 int get_x() const;
14 int get_y() const;
15 void show() const;
16 void move(int new_x, int new_y);
17
18 private:
19 int x, y;
20 };
21 Point::Point(int x0, int y0) : x{ x0 }, y{ y0 } { }
22 int Point::get_x() const {
23 return x;
24 }
25
26 int Point::get_y() const {
27 return y;
28 }
29
30 void Point::show() const {
31 cout << "(" << x << ", " << y << ")" << endl;
32 }
33
34 void Point::move(int new_x, int new_y) {
35 x = new_x;
36 y = new_y;
37 }
point.hpp
1 #define _CRT_SECURE_NO_WARNINGS 1
2 #include<iostream>
3 #include<vector>
4 #include"t.hpp"
5 using std::vector;
6 using std::cin;
7 // 输出vector<Point>对象内所有点的坐标
8 void output(const vector<Point>& v)
9 {
10 for (auto& t : v)
11 t.show();
12 }
13 void test() {
14 int n;
15 cin >> n;
16 vector<Point> x(n);
17 cout << "x对象中所有点坐标信息: " << endl;
18 output(x);
19 vector<Point> y(x);// 基于vector<Point>对象x构建对象y
20
21 cout << "\nx对象中所有点坐标信息: " << endl;
22 output(y);
23
24 cout << "\n更新x对象: " << endl;
25 x.at(0).move(30, 50);// 更新对象x内索引为0的点对象坐标
26
27 x.push_back(Point(2, 2)); // 向x对象末尾添加一个点对象
28
29 cout << "\nx对象中所有点坐标信息: " << endl;
30 output(x);
31 cout << "\ny对象中所有点坐标信息: " << endl;
32 output(y);
33 }
34
35 int main() {
36 test();
37 }
task1.cpp
1 1 #pragma once
2 2
3 3 #include <iostream>
4 4 using std::cout;
5 5 using std::endl;
6 6
7 7 class Point {
8 8 public:
9 9 Point(int x0 = 0, int y0 = 0);
10 10 ~Point() = default;
11 11
12 12 int get_x() const;
13 13 int get_y() const;
14 14 void show() const;
15 15 void move(int new_x, int new_y);
16 16
17 17 private:
18 18 int x, y;
19 19 };
20 20
21 21 Point::Point(int x0, int y0): x{x0}, y{y0} {
22 22 }
23 23
24 24 int Point::get_x() const {
25 25 return x;
26 26 }
27 27
28 28 int Point::get_y() const {
29 29 return y;
30 30 }
31 31
32 32 void Point::show() const {
33 33 cout << "(" << x << ", " << y << ")" << endl;
34 34 }
35 35
36 36 void Point::move(int new_x, int new_y) {
37 37 x = new_x;
38 38 y = new_y;
39 39 }
Point.hpp
1 1 #pragma once
2 2 #include "point.hpp"
3 3 #include <cassert>
4 4 #include <iostream>
5 5 class vectorPoint {
6 6 public:
7 7 vectorPoint(int n);
8 8 ~vectorPoint();
9 9 int get_size() const; // 获得当前动态数组内元素个数
10 10 Point& at(int index); // 返回下标为index的元素引用
11 11 Point& at(int index) const; // 返回下标为index的元素const引用
12 12 private:
13 13 int size; // 动态数组的大小
14 14 Point* ptr;
15 15 };
16 16 vectorPoint::vectorPoint(int n) : size{ n } {
17 17 ptr = new Point[n];
18 18 }
19 19 vectorPoint::~vectorPoint() {
20 20 delete[] ptr;
21 21 }
22 22 int vectorPoint::get_size() const {
23 23 return size;
24 24 }
25 25 Point& vectorPoint::at(int index) {
26 26 assert(index >= 0 && index < size); // 宏，在测试模式下工作。如果不满足条件，则程序终止
27 27 return ptr[index];
28 28 }
29 29 Point& vectorPoint::at(int index) const {
30 30 assert(index >= 0 && index < size);
31 31 return ptr[index];
32 32 }
vectorpoint.hpp
1 1 #include "vectorPoint.hpp"
2 2 #include <iostream>
3 3 // 输出vectorPoint对象内的所有数据
4 4 void output(const vectorPoint& v) {
5 5 for (auto i = 0; i < v.get_size(); ++i)
6 6 v.at(i).show();
7 7 }
8 8 // 测试vectorPoint类：构造对象、复制构造对象
9 9 void test() {
10 10 using namespace std;
11 11 int n;
12 12 cout << "输入vectorPoint对象中元素个数: ";
13 13 cin >> n;
14 14 vectorPoint x(n);
15 15 cout << "x对象中所有点坐标信息: " << endl;
16 16 output(x);
17 17 vectorPoint y(x);
18 18 cout << "\ny对象中所有点坐标信息: " << endl;
19 19 output(y);
20 20 cout << "\n更新x对象中点坐标信息......" << endl;
21 21 x.at(0).move(30, 50);
22 22 x.at(1).move(-1, -1);
23 23 cout << "x对象中所有点坐标信息: " << endl;
24 24 output(x);
25 25 cout << "\ny对象中所有点坐标信息: " << endl;
26 26 output(y);
27 27 }
28 28 int main() {
29 29 test();
30 30 }
task2.cpp
1 1 #pragma once
2 2
3 3 #include <iostream>
4 4 using std::cout;
5 5 using std::endl;
6 6
7 7 class Point {
8 8 public:
9 9 Point(int x0 = 0, int y0 = 0);
10 10 ~Point() = default;
11 11
12 12 int get_x() const;
13 13 int get_y() const;
14 14 void show() const;
15 15 void move(int new_x, int new_y);
16 16
17 17 private:
18 18 int x, y;
19 19 };
20 20
21 21 Point::Point(int x0, int y0): x{x0}, y{y0} {
22 22 }
23 23
24 24 int Point::get_x() const {
25 25 return x;
26 26 }
27 27
28 28 int Point::get_y() const {
29 29 return y;
30 30 }
31 31
32 32 void Point::show() const {
33 33 cout << "(" << x << ", " << y << ")" << endl;
34 34 }
35 35
36 36 void Point::move(int new_x, int new_y) {
37 37 x = new_x;
38 38 y = new_y;
39 39 }
point.hpp
1 1 #pragma once
2 2
3 3 #include "point.hpp"
4 4 #include <cassert>
5 5 #include <iostream>
6 6
7 7 class vectorPoint{
8 8 public:
9 9 vectorPoint(int n);
10 10 vectorPoint(const vectorPoint &vp);
11 11 ~vectorPoint();
12 12
13 13 int get_size() const;
14 14 Point& at(int index);
15 15 Point& at(int index) const;
16 16
17 17 private:
18 18 int size;
19 19 Point *ptr;
20 20 };
21 21
22 22 vectorPoint::vectorPoint(int n) : size{n} {
23 23 ptr = new Point[n];
24 24 }
25 25
26 26 vectorPoint::vectorPoint(const vectorPoint &vp): size{vp.size}, ptr{new Point[size]} {
27 27 for(auto i = 0; i < size; ++i)
28 28 ptr[i] = vp.ptr[i];
29 29 }
30 30
31 31 vectorPoint::~vectorPoint() {
32 32 delete[] ptr;
33 33 }
34 34
35 35 int vectorPoint::get_size() const {
36 36 return size;
37 37 }
38 38
39 39 Point& vectorPoint::at(int index) {
40 40 assert(index >= 0 && index < size);
41 41 return ptr[index];
42 42 }
43 43
44 44 Point& vectorPoint::at(int index) const {
45 45 assert(index >= 0 && index < size);
46 46 return ptr[index];
47 47 }
vectorPoint.hpp
1 1 #include "vectorPoint.hpp"
2 2 #include <iostream>
3 3
4 4 void output(const vectorPoint &v) {
5 5 for(auto i = 0; i < v.get_size(); ++i)
6 6 v.at(i).show();
7 7 }
8 8
9 9 void test() {
10 10 using namespace std;
11 11
12 12 int n;
13 13 cout << "输入vectorPoint对象中元素个数: ";
14 14 cin >> n;
15 15
16 16 vectorPoint x(n);
17 17 cout << "x对象中所有点坐标信息: " << endl;
18 18 output(x);
19 19
20 20 vectorPoint y(x);
21 21 cout << "\ny对象中所有点坐标信息: " << endl;
22 22 output(y);
23 23
24 24 cout << "\n更新x对象中点坐标信息......" << endl;
25 25 x.at(0).move(30, 50);
26 26 x.at(1).move(-1, -1);
27 27
28 28 cout << "x对象中所有点坐标信息: " << endl;
29 29 output(x);
30 30
31 31 cout << "\ny对象中所有点坐标信息: " << endl;
32 32 output(y);
33 33 }
34 34
35 35 int main() {
36 36 test();
37 37 }
task3.cpp
1 1 #include <iostream>
2 2 using namespace std;
3 3 // 函数声明
4 4 void swap1(int& rx, int& ry); // 引用作为形参
5 5 void swap2(int* px, int* py); // 指针作为形参
6 6 void print(int x, int y); // 普通变量作为形参
7 7 // 测试代码
8 8 void test() {
9 9 int x = 3, y = 4;
10 10 print(x, y);
11 11 swap1(x, y); // 函数调用，注意：引用作为形参时，实参形式
12 12 print(x, y);
13 13 cout << endl;
14 14 x = 3, y = 4;
15 15 print(x, y);
16 16 swap2(&x, &y); // 函数调用，注意：指针作为形参时，实参形式
17 17 print(x, y);
18 18 }
19 19 int main() {
20 20 test();
21 21 }
22 22 // 函数定义：交换两个变量（引用变量作为形参）
23 23 void swap1(int& rx, int& ry) {
24 24 int t;
25 25 t = rx; rx = ry; ry = t;
26 26 }
27 27 // 函数定义：交换两个变量（指针变量作为形参）
28 28 void swap2(int* px, int* py) {
29 29 int t;
30 30 t = *px; *px = *py; *py = t;
31 31 }
32 32 // 函数定义：输出两个变量（普通变量作为形参）
33 33 void print(int x, int y) {
34 34 std::cout << "x = " << x << ", y = " << y << "\n";
35 35 }
task4.1.cpp
1 1 #include <iostream>
2 2 #include <typeinfo>
3 3 using namespace std;
4 4 int main() {
5 5 int a;
6 6 int& ra = a;
7 7 ra = 4;
8 8 int* pa = &a;
9 9 *pa = 5;
10 10 // 以十六进制形式输出普通变量a, 引用变量ra，指针变量pa的地址
11 11 cout << "&a = " << hex << &a << endl;
12 12 cout << "&ra = " << hex << &ra << endl;
13 13 cout << "&pa = " << hex << &pa << "\n\n";
14 14 // 输出普通变量a, 引用变量ra，指针变量pa的值
15 15 cout << "a = " << a << endl;
16 16 cout << "ra = " << a << endl;
17 17 cout << "pa = " << hex << pa << endl;
18 18 // 输出指针变量pa指向的变量的值
19 19 cout << "*pa = " << *pa << "\n\n";
20 20 // 输出普通变量a，引用变量ra, 指针变量pa的类型信息
21 21 cout << "type a: " << typeid(a).name() << endl;
22 22 cout << "type ra: " << typeid(ra).name() << endl;
23 23 cout << "type pa: " << typeid(pa).name() << endl;
24 24 }
task4.2.cpp
1 1 #include <iostream>
2 2 #include <vector>
3 3 using namespace std;
4 4 template<typename T>
5 5 void output(const T& x) {
6 6 for (auto i : x)
7 7 std::cout << i << ", ";
8 8 std::cout << "\b\b \n";
9 9 }
10 10 template<typename T>
11 11 void square1(T& x) {
12 12 for (auto i : x) // i是普通类型
13 13 i *= i;
14 14 }
15 15 template<typename T>
16 16 void square2(T& x) {
17 17 for (auto& i : x) // i是引用类型
18 18 i *= i;
19 19 }
20 20 void test1() {
21 21 vector<int> x{ 1, 2, 3, 4, 5 };
22 22 cout << "动态int型数组对象x内的元素值: ";
23 23 output(x);
24 24 cout << "调用函数square1()......" << endl;
25 25 square1(x);
26 26 cout << "动态int型数组对象x内的元素值: ";
27 27 output(x);
28 28 }
29 29 void test2() {
30 30 vector<int> x{ 1, 2, 3, 4, 5 };
31 31 cout << "动态int型数组对象x内的元素值: ";
32 32 output(x);
33 33 cout << "调用函数square2()......" << endl;
34 34 square2(x);
35 35 cout << "动态int型数组对象x内的元素值: ";
36 36 output(x);
37 37 }
38 38 int main() {
39 39 cout << "测试1: " << endl;
40 40 test1();
41 41 cout << "\n测试2: " << endl;
42 42 test2();
43 43 }
task4.3.cpp
1 #include <iostream>
2 #include <cassert>
3 using std::cout;
4 using std::endl;
5
6 // 类Matrix的声明
7 class Matrix {
8 public:
9 Matrix(int n, int m); // 构造函数，构造一个n*m的矩阵
10 Matrix(int n); // 构造函数，构造一个n*n的矩阵
11 Matrix(const Matrix &x); // 复制构造函数， 使用已有的矩阵X构造
12 ~Matrix();
13 void set(const double *pvalue); // 用pvalue指向的连续内存块数据按行为矩阵赋值
14
15 void set(int i, int j, double value); // 设置矩阵对象索引(i,j)的元素值为value
16
17 double& at(int i, int j) const; // 返回矩阵对象索引(i,j)的元素引用
18 double& at(int i, int j); // 返回矩阵对象索引(i,j)的元素引用
19 int get_lines() const; // 返回矩阵对象行数
20 int get_cols() const; // 返回矩阵对象列数
21 void print() const; // 按行打印输出矩阵对象元素值
22
23 private:
24 int lines; // 矩阵对象内元素行数
25 int cols; // 矩阵对象内元素列数
26 double *ptr;
27 };
28
29 // 类Matrix的实现
30 Matrix::Matrix(int n, int m) : lines(n), cols(m) {
31 ptr = new double[lines * cols];
32 }
33
34 Matrix::Matrix(int n) : Matrix(n, n) {}
35
36 Matrix::Matrix(const Matrix &x) : lines(x.lines), cols(x.cols) {
37 ptr = new double[lines * cols];
38 for (int i = 0; i < lines * cols; i++) {
39 ptr[i] = x.ptr[i];
40 }
41 }
42
43 Matrix::~Matrix() {
44 delete[] ptr;
45 }
46
47 void Matrix::set(const double *pvalue) {
48 for (int i = 0; i < lines * cols; i++) {
49 ptr[i] = pvalue[i];
50 }
51 }
52
53 void Matrix::set(int i, int j, double value) {
54 assert(i >= 0 && i < lines);
55 assert(j >= 0 && j < cols);
56 ptr[i * cols + j] = value;
57 }
58
59 double& Matrix::at(int i, int j) const {
60 assert(i >= 0 && i < lines);
61 assert(j >= 0 && j < cols);
62 return ptr[i * cols + j];
63 }
64
65 double& Matrix::at(int i, int j) {
66 assert(i >= 0 && i < lines);
67 assert(j >= 0 && j < cols);
68 return ptr[i * cols + j];
69 }
70
71 int Matrix::get_lines() const {
72 return lines;
73 }
74
75 int Matrix::get_cols() const {
76 return cols;
77 }
78
79 void Matrix::print() const {
80 for (int i = 0; i < lines; i++) {
81 for (int j = 0; j < cols; j++) {
82 cout << ptr[i * cols + j] << " ";
83 }
84 cout << endl;
85 }
86 }
matrix.hpp
#include <iostream>
#include "matrix.hpp"
using namespace std;
const int N1 = 3;
const int N2 = 2;
// 输出一个矩阵对象中索引为index对应的行的所有元素值
void output(const Matrix &m, int index) {
for(auto j = 0; j < m.get_cols(); ++j)
cout << m.at(index, j) << ", ";
cout << "\b\b \n";
}
void test() {
double x[N1*N2] = {1, 2, 3, 4, 5, 6};
Matrix m1(N1, N2); // 创建一个N1×N2矩阵
m1.set(x); // 用一维数组x的值按行为矩阵m1赋值
cout << "矩阵对象m1: " << endl;
m1.print(); // 打印矩阵m1的值
cout << "矩阵对象m1第0行是: " << endl;
output(m1, 0);
cout << endl;
Matrix m2(N2, N1);
m2.set(x);
cout << "矩阵对象m2: " << endl;
m2.print();
cout << "矩阵对象m2第0行是: " << endl;
output(m2, 0);
cout << endl;
Matrix m3(m2); // 用矩阵m2构造新的矩阵m3
m3.set(0, 0, 999); // 讲矩阵对象m2索引(0,0)元素设为999
cout << "矩阵对象m3:" << endl;
m3.print();
cout << endl;
Matrix m4(2); // 创建一个2*2矩阵对象
m4.set(x); // 用一维数组x的值按行为矩阵m4赋值
cout << "矩阵对象m4:" << endl;
m4.print();
}
int main() {
test();
}
task6.cpp
标签：Matrix,const,vectorPoint,Point,int,void,实验,数组,指针 From： https://www.cnblogs.com/zs202183290495/p/17811898.html