数组类 【】 == ！=运算符重载

#include“”

#pragma  once#include<iostream>using namespace std;class Array{public:Array(int length);Array(const Array&obj );~Array();public:void setData(int index,int valude);int getData(int index);int length();public://函数返回至当左值 需要返回一个引用int& operator[](int i);//[]操作符重载//重载等号操作符Array& operator=(Array &a1);//重载==号操作符bool operator==(Array &a1);//重载 ！=bool operator != (Array &a1);protected:private:int m_length;int *m_space;};

#include“MyArray.cpp”

#include "MyArray.h"Array::Array(int length){if (length < 0){length = 0;}m_length =length;m_space = new int[m_length];}//Array a2 = a1;Array::Array(const Array&obj ){this->m_length = obj.m_length;this->m_space = new int [this->m_length];// 分配内存空间for (int i=0;i<m_length;i++)//数据元素赋值{this->m_space[i] = obj.m_space[i];}}Array::~Array(){if (m_space != NULL){delete[] m_space;m_length = 0;}}//a1.setData(i,i);void Array::setData(int index,int valude){m_space[index] = valude;}int Array::getData(int index){return m_space[index];}int Array::length(){return m_length;}int& Array::operator[](int i){return m_space[i];}Array& Array::operator=(Array &a1){//1:释放原来的空间if(this->m_space != NULL){delete [] m_space;m_length = 0;}//2:根据a1的大小 分配内存空间m_length = a1.m_length;m_space = new int[a1.m_length];//3:copy数据for (int i= 0;i<m_length;i++){/*m_space[i] = a1.m_space[i];*/m_space[i] = a1[i];}return *this;}bool Array::operator==(Array &a1){if (this->m_length != a1.m_length){return false;}for (int i=0;i<m_length;i++){if(this->m_space[i] != a1[i]){return false;}}return true;}bool Array::operator != (Array &a1){//if (*this == a1)//{//return true;//}//else//{//return false;//}return !(*this == a1);}

Test_Array2.cpp

#include<iostream>using namespace std;#include "MyArray.h"//类的框架设计设计完毕//类的测试案例//重载下标操作符//重载三个int main(){Array a1(10);for (int i=0;i<a1.length();i++){a1.setData(i,i);//1：需要优化的点a1[i] = i;//报错//函数返回至当左值 需要返回一个引用//a1.operator[i]}cout<<"输a1: "<<endl;for (int i=0;i<a1.length();i++){//cout<<a1.getData(i)<<" "<<endl;//2:需要优化的点cout<<a1[i]<<endl;}//void operator[](int i)//int operator[](int i)//int& operator[](int i)Array a2 = a1;cout<<"输a2:"<<endl;for (int i=0;i<a1.length();i++){cout<<a1.getData(i)<<" "<<endl;}Array a3(5);//3：需要优化的地方{a3 = a1;a3 = a2 = a1;//a3.operator=(a1)//Array& operator=(Array &a1)cout<<"打印数组a3"<<endl;for (int i=0;i<a3.length();i++)//数据元素赋值{cout<<a3[i]<<" ";}}//4：需要优化的地方if (a3 == a1){printf("相等\n");}else{printf("不相等\n");}if (a3 != a1){printf("不相等\n");}else{printf("相等\n");}/*bool operator != (Array &a1);*///a3.operator!=(a1);//a3.operator==(a1)//bool operator==(Array &a1);system("pause");return 0;}