#include <bits/stdc++.h>
using namespace std;

class Vector_int
{
private:
    int *arrayAd;
    int length;

public:
    Vector_int(const int &B);
    Vector_int(const int &n, const int &m);
    ~Vector_int();
    Vector_int(const Vector_int &A)
    {
        length = A.length;
        arrayAd = new int[length];
        for (int y = 0; y < length; y++)
        {
            arrayAd[y] = A.arrayAd[y];
        }
    }
    int at(const int &m);
    void show()
    {
        cout << "DATA: ";
        for (int j = 0; j < length; j++)
        {
            cout << arrayAd[j] << "  ";
        }
        cout << endl;
    }
};
Vector_int::Vector_int(const int &n)
{
    length = n;
    arrayAd = new int[n];
}
Vector_int::Vector_int(const int &n, const int &m)
{
    length = n;
    arrayAd = new int[n];
    for (int i = 0; i < n; i++)
    {
        arrayAd[i] = m;
    }
}
Vector_int::~Vector_int()
{
    delete[] arrayAd;
}
int Vector_int::at(const int &m)
{
    cout << "arrayAd[ " << m << " ] = " << arrayAd[m];
    cout << endl;
}

View Code

#include"Vector_int.hpp"
#include<bits/stdc++.h>

using namespace std;
int main()
{
    int f,I,J,K;
    int v[1000];
    cout<<"数组元素个数/初始化： "<<endl; 
    cin>>f>>J;
    cout<<"索引："; 
    cin>>K; 
    Vector_int M(f,J);
    Vector_int N(M);
    M.at(K);
    M.show();
    N.show(); 
    
    return 0;
}

View Code

 

#ifndef MATRIX_H
#define MATRIX_H
#include <iostream>
#include <cassert>

using namespace std;
class Matrix
{
public:
    Matrix(const int n);              
    Matrix(const int n,const int m);             
    Matrix(const Matrix &X);         
    ~Matrix();                       
    void set(const double *pvalue);     
    void set(const int i,const int j,const int value); 
    double & at(const int i,const int j)
    {
           return p[i*cols+j];
    }        
    double at(const int i,const int j) const
    {
       return p[i*cols+j];
    }   
    int get_lines() const;          
    int get_cols() const;            
    void print() const;                
private:
    int lines; 
    int cols;  
    int size;
    double *p; 
};
    
    Matrix::Matrix(const int n)
    {
        lines=n;
        cols=n;
        size=n*n;
        p=new double[size];
    }
    Matrix::Matrix(const int n,const int m)
    {
    
        lines=n;
        cols=m;
        size=n*m;
        p = new double[size]; 
    }
    Matrix::Matrix(const Matrix &x)
    {
        
        lines=x.lines;
        cols=x.cols;
        p = new double[x.size]; 
        for(int i=0;i<x.size;i++)
        {
            p[i]=x.p[i];
        }
        
    }
    void Matrix::set(const double *pvalue)
    {
         for(int i=0;i<size;i++)
         p[i]=pvalue[i];
    }
    void Matrix::set(const int i,const int j,const int value)
    {
        p[i*cols+j]=value;
    }
    int Matrix::get_lines() const
    {
        return lines;
    }
    int Matrix::get_cols() const
    {
        return cols;
    }
    void Matrix::print() const
    {

        for(int i=0;i<lines;i++)
        {
            for(int j=0;j<cols;j++)
            {
                cout<<p[i*cols+j]<<" ";
            }
            cout<<endl;
        }
    
    }

    Matrix::~Matrix()
    {
        delete[] p;
    }
    #endif

View Code

#include <iostream>
#include "Matrix.hpp"

int main()
{
    using namespace std;

    double x[] = {1, 2, 3, 4, 5, 6};

    Matrix m1(3, 2);    // 创建一个3×2的矩阵
    m1.set(x);          // 用一维数组x的值按行为矩阵m1赋值
    m1.print();         // 打印矩阵m1的值
    cout << "the first line is: " << endl;
    cout << m1.at(0, 0) << " " << m1.at(0, 1) << endl;
    cout << endl;

    Matrix m2(2, 3);
    m2.set(x);
    m2.print();
    cout << "the first line is: " << endl;
    cout << m2.at(0, 0) << " " << m2.at(0, 1) << " " << m2.at(0, 2) << endl;
    cout << endl;

    Matrix m3(m2);
    m3.set(0, 0, 999);
    m3.print();
}

View Code