自定义模板数组

Person.h

#pragma once
#include <string>
class Person
{
public:
    Person();
    Person(std::string name, int age) {
        this->mName = name;
        this->mAge = age;
    }
    ~Person();
public:
    std::string mName;
    int mAge;
};

Person.cpp

#include "stdafx.h"
#include "Person.h"


Person::Person()
{
}


Person::~Person()
{
}

MyArray.hpp

#pragma once
template <class T>
class MyArray
{
public:
    explicit MyArray(int capacity)
    {
        this->m_Capacity = capacity;
        this->m_Size = 0;
        this->pAddress = new T[this->m_Capacity];
    }

    MyArray(const MyArray& arr)
    {
        this->m_Capacity = arr.m_Capacity;
        this->m_Size = arr.m_Size;
        this->pAddress = new T[arr.m_Capacity];
        for (int i = 0; i < arr.m_Size; i++)
        {
            this->pAddress[i] = arr.pAddress[i];
        }
    }

    T& operator[](int index)
    {
        return this->pAddress[index];
    }

    void Push_back(const T& val)
    {
        if (this->m_Capacity == this->m_Size)
        {
            return;
        }
        this->pAddress[this->m_Size] = val;
        this->m_Size++;
    }

    void Pop_back()
    {
        if (this->m_Size == 0)
        {
            return;
        }
        this->m_Size--;
    }

    int getSize()
    {
        return this->m_Size;
    }

    ~MyArray()
    {
        if (this->pAddress != nullptr)
        {
            delete[] this->pAddress;
            this->pAddress = nullptr;
            this->m_Capacity = 0;
            this->m_Size = 0;
        }
    }
private:
    T* pAddress;
    int m_Capacity;
    int m_Size;
};

 main.cpp

// Te03.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <iostream>
using namespace std;

#include "Person.h"
#include "MyArray.hpp"

void PrintArrayInt(MyArray<int>& arr)
{
    for (int i = 0; i < arr.getSize(); i++)
    {
        cout << arr[i] << " ";
    }
    cout << endl;
}


void PrintPerson(MyArray<Person>& personArr)
{
    for (int i = 0; i < personArr.getSize(); i++)
    {
        cout << "姓名：" << personArr[i].mName << "年龄：" << personArr[i].mAge << endl;
    }
}

void Test01()
{
    MyArray<int> myArrayInt(10);
    for (int i = 0; i < 9; i++)
    {
        myArrayInt.Push_back(i);
    }
    myArrayInt.Push_back(100);
    PrintArrayInt(myArrayInt);
    myArrayInt.Pop_back();
    PrintArrayInt(myArrayInt);
}

void Test02()
{
    MyArray<Person> myArrayPerson(10);
    Person p1("张飞", 25);
    Person p2("马超", 23);
    Person p3("赵云", 24);
    Person p4("关羽", 28);
    Person p5("黄忠", 76);
    myArrayPerson.Push_back(p1);
    myArrayPerson.Push_back(p2);
    myArrayPerson.Push_back(p3);
    myArrayPerson.Push_back(p4);
    myArrayPerson.Push_back(p5);
    PrintPerson(myArrayPerson);
}

int main()
{
    Test01();
    cout << "------------------------------------" << endl;
    Test02();
    return 0;
}