实验任务1
1 #pragma once
2
3 #include <iostream>
4 using std::cout;
5 using std::endl;
6
7 class Point {
8 public:
9 Point(int x0 = 0, int y0 = 0);
10 ~Point() = default;
11
12 int get_x() const;
13 int get_y() const;
14 void show() const;
15 void move(int new_x, int new_y);
16
17 private:
18 int x, y;
19 };
20
21 Point::Point(int x0, int y0) : x{ x0 }, y{ y0 } {
22 }
23
24 int Point::get_x() const {
25 return x;
26 }
27
28 int Point::get_y() const {
29 return y;
30 }
31
32 void Point::show() const {
33 cout << "(" << x << "," << y << ")" << endl;
34 }
35
36 void Point::move(int new_x, int new_y) {
37 x = new_x;
38 y = new_y;
39 }
point.hpp
1 #include <iostream>
2 #include "point.hpp"
3 #include <vector>
4
5 using std::vector;
6 using std::cin;
7
8 //输出vector<Point>对象内所有点的坐标
9 void output(const vector<Point>& v) {
10 for (auto& t : v)
11 t.show();
12 }
13
14 void test() {
15 int n;
16 cin >> n;
17
18 vector<Point> x(n);
19 cout << "x对象中所有点坐标信息：" << endl;
20 output(x);
21
22 vector<Point> y(x); //基于vector<Point>对象x构建对象y
23 cout << "\nx对象中所有点坐标信息：" << endl;
24 output(y);
25
26 cout << "\n更新x对象：" << endl;
27 x.at(0).move(30, 50); //更新对象x内索引为0的点对象坐标
28 x.push_back(Point(2, 2)); //向x对象末尾添加一个点对象
29
30 cout << "\nx对象中所有点坐标信息：" << endl;
31 output(x);
32 cout << "\ny对象中所有点坐标信息：" << endl;
33 output(y);
34 }
35
36 int main() {
37 test();
38 }
task1.cpp
实验任务2
#pragma once
#include<iostream>
using std::cout;
using std::endl;
class Point {
public:
Point(int x0 = 0, int y0 = 0);
~Point() = default;
int get_x() const;
int get_y() const;
void show() const;
void move(int new_x, int new_y);
private:
int x, y;
};
Point::Point(int x0, int y0) : x{ x0 }, y{ y0 } {
}
int Point::get_x() const {
return x;
}
int Point::get_y() const {
return y;
}
void Point::show() const {
cout << "(" << x << "," << y << ")" << endl;
}
void Point::move(int new_x, int new_y) {
x = new_x;
y = new_y;
}
point.hpp
#pragma once
#include"point.hpp"
#include<cassert>
#include<iostream>
class vectorPoint {
public:
vectorPoint(int n);
~vectorPoint();
int get_size() const; // 获得当前动态数组内元素个数
Point& at(int index); // 返回下标为index的元素引用
Point& at(int index) const; // 返回下标为index的元素const引用
private:
int size; // 动态数组的大小
Point* ptr;
};
vectorPoint::vectorPoint(int n) : size{ n } {
ptr = new Point[n];
}
vectorPoint::~vectorPoint() {
delete[] ptr;
}
int vectorPoint::get_size() const {
return size;
}
Point&vectorPoint::at(int index) {
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
return ptr[index];
}
Point&vectorPoint::at(int index) const {
assert(index >= 0 && index < size);
return ptr[index];
}
vectorPoint.hpp
实验任务三
1 #pragma once
2
3 #include <iostream>
4 using std::cout;
5 using std::endl;
6
7 class Point {
8 public:
9 Point(int x0 = 0, int y0 = 0);
10 ~Point() = default;
11
12 int get_x() const;
13 int get_y() const;
14 void show() const;
15 void move(int new_x, int new_y);
16
17 private:
18 int x, y;
19 };
20
21 Point::Point(int x0, int y0) : x{ x0 }, y{ y0 } {
22 }
23
24 int Point::get_x() const {
25 return x;
26 }
27
28 int Point::get_y() const {
29 return y;
30 }
31
32 void Point::show() const {
33 cout << "(" << x << ", " << y << ")" << endl;
34 }
35
36 void Point::move(int new_x, int new_y) {
37 x = new_x;
38 y = new_y;
39 }
point.hpp
1 #pragma once
2
3 #include "point.hpp"
4 #include <cassert>
5 #include <iostream>
6
7 class vectorPoint {
8 public:
9 vectorPoint(int n);
10 vectorPoint(const vectorPoint& vp);
11 ~vectorPoint();
12
13 int get_size() const; // 获得当前动态数组内元素个数
14 Point& at(int index); // 返回下标为index的元素引用
15 Point& at(int index) const; // 返回下标为index的元素const引用
16
17 private:
18 int size; // 动态数组的大小
19 Point* ptr;
20 };
21
22 vectorPoint::vectorPoint(int n) : size{ n } {
23 ptr = new Point[n];
24 }
25
26 vectorPoint::vectorPoint(const vectorPoint& vp) : size{ vp.size }, ptr{ new Point[size] } {
27 for (auto i = 0; i < size; ++i)
28 ptr[i] = vp.ptr[i];
29 }
30
31 vectorPoint::~vectorPoint() {
32 delete[] ptr;
33 }
34
35 int vectorPoint::get_size() const {
36 return size;
37 }
38
39 Point& vectorPoint::at(int index) {
40 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
41 return ptr[index];
42 }
43
44 Point& vectorPoint::at(int index) const {
45 assert(index >= 0 && index < size);
46 return ptr[index];
47 }
vectorPoint.hpp
#include "vectorPoint.hpp"
#include <iostream>
// 输出vectorPoint对象内的所有数据
void output(const vectorPoint& v) {
for (auto i = 0; i < v.get_size(); ++i)
v.at(i).show();
}
// 测试vectorPoint类：构造对象、复制构造对象
void test() {
using namespace std;
int n;
cout << "输入vectorPoint对象中元素个数: ";
cin >> n;
vectorPoint x(n);
cout << "x对象中所有点坐标信息: " << endl;
output(x);
vectorPoint y(x);
cout << "\ny对象中所有点坐标信息: " << endl;
output(y);
cout << "\n更新x对象中点坐标信息......" << endl;
x.at(0).move(30, 50);
x.at(1).move(-1, -1);
cout << "x对象中所有点坐标信息: " << endl;
output(x);
cout << "\ny对象中所有点坐标信息: " << endl;
output(y);
}
int main() {
test();
}
task3.cpp
实验任务四
1 #include <iostream>
2 using namespace std;
3
4 // 函数声明
5 void swap1(int& rx, int& ry); // 引用作为形参
6 void swap2(int* px, int* py); // 指针作为形参
7 void print(int x, int y); // 普通变量作为形参
8
9 // 测试代码
10 void test() {
11 int x = 3, y = 4;
12
13 print(x, y);
14 swap1(x, y); // 函数调用，注意：引用作为形参时，实参形式
15 print(x, y);
16
17 cout << endl;
18
19 x = 3, y = 4;
20 print(x, y);
21 swap2(&x, &y); // 函数调用，注意：指针作为形参时，实参形式
22 print(x, y);
23 }
24
25 int main() {
26 test();
27 }
28
29 // 函数定义：交换两个变量（引用变量作为形参）
30 void swap1(int& rx, int& ry) {
31 int t;
32
33 t = rx; rx = ry; ry = t;
34 }
35
36 // 函数定义：交换两个变量（指针变量作为形参）
37 void swap2(int* px, int* py) {
38 int t;
39
40 t = *px; *px = *py; *py = t;
41 }
42
43 // 函数定义：输出两个变量（普通变量作为形参）
44 void print(int x, int y) {
45 std::cout << "x = " << x << ", y = " << y << "\n";
46 }
task4_1.cpp
1 #include <iostream>
2 #include <typeinfo>
3 using namespace std;
4
5 int main() {
6 int a;
7
8 int& ra = a;
9 ra = 4;
10
11 int* pa = &a;
12 *pa = 5;
13
14 // 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
15 cout << "&a = " << hex << &a << endl;
16 cout << "&ra = " << hex << &ra << endl;
17 cout << "&pa = " << hex << &pa << "\n\n";
18
19 // 输出普通变量a, 引用变量ra，指针变量pa的值
20 cout << "a = " << a << endl;
21 cout << "ra = " << a << endl;
22 cout << "pa = " << hex << pa << endl;
23
24 // 输出指针变量pa指向的变量的值
25 cout << "*pa = " << *pa << "\n\n";
26
27 // 输出普通变量a，引用变量ra, 指针变量pa的类型信息
28 cout << "type a: " << typeid(a).name() << endl;
29 cout << "type ra: " << typeid(ra).name() << endl;
30 cout << "type pa: " << typeid(pa).name() << endl;
31 }
task4_2.cpp
1 #include <iostream>
2 #include <vector>
3
4 using namespace std;
5
6 template<typename T>
7 void output(const T &x) {
8 for(auto i: x)
9 std::cout << i << ", ";
10 std::cout << "\b\b \n";
11 }
12
13 template<typename T>
14 void square1(T &x) {
15 for(auto i: x) // i是普通类型
16 i *= i;
17 }
18
19 template<typename T>
20 void square2(T &x) {
21 for(auto &i: x) // i是引用类型
22 i *= i;
23 }
24
25 void test1() {
26 vector<int> x {1, 2, 3, 4, 5};
27
28 cout << "动态int型数组对象x内的元素值: ";
29 output(x);
30
31 cout << "调用函数square1()......" << endl;
32 square1(x);
33
34 cout << "动态int型数组对象x内的元素值: ";
35 output(x);
36 }
37
38 void test2() {
39 vector<int> x {1, 2, 3, 4, 5};
40
41 cout << "动态int型数组对象x内的元素值: ";
42 output(x);
43
44 cout << "调用函数square2()......" << endl;
45 square2(x);
46
47 cout << "动态int型数组对象x内的元素值: ";
48 output(x);
49 }
50
51 int main() {
52 cout << "测试1: " << endl;
53 test1();
54
55 cout << "\n测试2: " << endl;
56 test2();
57 }
task4_3.cpp
实验任务五
1 #pragma once
2 #include <iostream>
3 #include <cassert>
4
5 using namespace std;
6
7 class vectorInt {
8 public:
9 vectorInt(int n);
10 vectorInt(int n, int value);
11 vectorInt(const vectorInt& vi);
12 ~vectorInt();
13
14 int get_size() const;
15 int& at(int index);
16 int& at(int index) const;
17
18 private:
19 int* ptr;
20 int size;
21 };
22
23 vectorInt::vectorInt(int n) : size{ n } {
24 ptr = new int[n];
25 cout << "constructor vectorInt(int n) called." << endl;
26 }
27
28 vectorInt::vectorInt(int n, int value) : size{ n }, ptr{ new int[n] } {
29 for (auto i = 0; i < size; i++)
30 ptr[i] = value;
31 cout << "constructor vectorInt(int n, int value) called." << endl;
32 }
33
34 vectorInt::vectorInt(const vectorInt& vi) : size{ vi.size }, ptr{ new int[size] } {
35 for (auto i = 0; i < size; i++)
36 ptr[i] = vi.ptr[i];
37 cout << "copy constructor called." << endl;
38 }
39
40
41 vectorInt::~vectorInt() {
42 delete[] ptr;
43 cout << "destructor called" << endl;
44 }
45
46 int vectorInt::get_size() const {
47 return size;
48 }
49
50 int& vectorInt::at(int index) {
51 assert(index >= 0 && index < size);
52 return ptr[index];
53 }
54
55 int& vectorInt::at(int index) const {
56 assert(index >= 0 && index < size);
57 return ptr[index];
58 }
vectorInt.hpp
1 #include "vectorInt.hpp"
2 #include <iostream>
3
4 using std::cout;
5 using std::endl;
6 using std::cin;
7
8 //函数output（）的定义：遍历输出vectorInt对象内的所有元素
9 void output(const vectorInt& vi) {
10 for (auto i = 0; i <= vi.get_size(); i++)
11 cout << vi.at(i) << ",";
12 }
13
14 void test() {
15 int n;
16 cout << "输入vectorInt对象中元素个数：";
17 cin >> n;
18
19 vectorInt x1(n); //构造动态int数组对象x1，包含n个元素，不对元素初始化
20 for (auto i = 0; i < n; i++)
21 x1.at(i) = i * i;
22 cout << "vectorInt对象x1：";
23 output(x1);
24
25 vectorInt x2(n, 42); // 构造动态int数组对象x1，包含n个元素，每个元素初始值为42
26 cout << "vectorInt对象x2：";
27 output(x2);
28 vectorInt x3(x2); //使用x2构造x3
29 cout << "vectorInt对象x3：";
30 output(x3);
31
32 cout << "更新vectorInt对象x2......\n";
33 x2.at(0) = 77;
34 x2.at(1) = -999;
35
36 cout << "vectorInt对象x：";
37 output(x2);
38 cout << "vectorInt对象x3：";
39 output(x3);
40 }
41
42 int main() {
43 test();
44 }
task5.cpp
实验任务6
1 #pragma once
2
3 #include <iostream>
4 #include <cassert>
5 using namespace std;
6
7 // 类Matrix的声明
8 class Matrix {
9 public:
10 Matrix(int n, int m); // 构造函数，构造一个n*m的矩阵
11 Matrix(int n); // 构造函数，构造一个n*n的矩阵
12 Matrix(const Matrix& x); // 复制构造函数， 使用已有的矩阵X构造
13 ~Matrix();
14
15 void set(const double* pvalue); // 用pvalue指向的连续内存块数据按行为矩阵赋值
16 void set(int i, int j, double value); // 设置矩阵对象索引(i,j)的元素值为value
17
18 double& at(int i, int j) const; // 返回矩阵对象索引(i,j)的元素引用
19 double& at(int i, int j); // 返回矩阵对象索引(i,j)的元素引用
20
21 int get_lines() const; // 返回矩阵对象行数
22 int get_cols() const; // 返回矩阵对象列数
23
24 void print() const; // 按行打印输出矩阵对象元素值
25
26 private:
27 int lines; // 矩阵对象内元素行数
28 int cols; // 矩阵对象内元素列数
29 double* ptr;
30 };
31
32 // 类Matrix的实现
33 Matrix::Matrix(int n, int m) : lines{ n }, cols{ m } {
34 ptr = new double[n * m];
35 }
36 Matrix::Matrix(int n) : lines{ n }, cols{ n } {
37 ptr = new double[n * n];
38 }
39 Matrix::Matrix(const Matrix& x) : lines{ x.lines }, cols{ x.cols } {
40 ptr = new double[lines * cols];
41 for (int i = 0; i < lines * cols; i++)
42 ptr[i] = x.ptr[i];
43 }
44 Matrix::~Matrix() {
45 delete[] ptr;
46 }
47
48 void Matrix::set(const double* pvalue) {
49 for (int i = 0, j = 0; i < lines * cols; i++, j++)
50 ptr[i] = pvalue[j];
51 }
52 void Matrix::set(int i, int j, double value) {
53 ptr[i * lines + j] = value;
54 }
55
56 double& Matrix::at(int i, int j) const {
57 return ptr[i * lines + j];
58 }
59 double& Matrix::at(int i, int j) {
60 return ptr[i * lines + j];
61 }
62
63 int Matrix::get_lines() const {
64 return lines;
65 }
66 int Matrix::get_cols() const {
67 return cols;
68 }
69
70 void Matrix::print() const {
71 for (int i = 0; i < lines; i++)
72 {
73 for (int j = 0; j < cols; j++)
74 {
75 cout << ptr[i * lines + j] << " ";
76 }
77 cout << endl;
78 }
79 }
matrix.hpp
1 #include <iostream>
2 #include "matrix.hpp"
3
4 using namespace std;
5
6 const int N1 = 3;
7 const int N2 = 2;
8
9 // 输出一个矩阵对象中索引为index对应的行的所有元素值
10 void output(const Matrix& m, int index) {
11 for (auto j = 0; j < m.get_cols(); ++j)
12 cout << m.at(index, j) << ", ";
13 cout << "\b\b \n";
14 }
15
16 void test() {
17
18
19 double x[N1 * N2] = { 1, 2, 3, 4, 5, 6 };
20
21 Matrix m1(N1, N2); // 创建一个N1×N2矩阵
22 m1.set(x); // 用一维数组x的值按行为矩阵m1赋值
23 cout << "矩阵对象m1: " << endl;
24 m1.print(); // 打印矩阵m1的值
25 cout << "矩阵对象m1第0行是: " << endl;
26 output(m1, 0);
27 cout << endl;
28
29 Matrix m2(N2, N1);
30 m2.set(x);
31 cout << "矩阵对象m2: " << endl;
32 m2.print();
33 cout << "矩阵对象m2第0行是: " << endl;
34 output(m2, 0);
35 cout << endl;
36
37 Matrix m3(m2); // 用矩阵m2构造新的矩阵m3
38 m3.set(0, 0, 999); // 讲矩阵对象m2索引(0,0)元素设为999
39 cout << "矩阵对象m3:" << endl;
40 m3.print();
41 cout << endl;
42
43 Matrix m4(2); // 创建一个2*2矩阵对象
44 m4.set(x); // 用一维数组x的值按行为矩阵m4赋值
45 cout << "矩阵对象m4:" << endl;
46 m4.print();
47 }
48
49 int main() {
50 test();
51 }
task6.cpp
标签：index,const,vectorPoint,Point,int,void,实验,数组,指针 From： https://www.cnblogs.com/moliqi1/p/17811862.html