C++是拷贝构造函数与赋值运算符重载

----------------------------------griddata.h头文件-------------------------------------

#ifndef GRIDDATA_H
#define GRIDDATA_H
class GridData
{
public:

　　CString number;//产品编号

　　CString date; //测试日期 

　　CString people_test; //测试人员
　　CString people_check; //检验人员
　　CString people_record; //记录人员
　　CString title; //表格的标题
public:
　　GridData();
　　GridData(const GridData& data);              //拷贝构造函数，请注意定义的格式
　　GridData& operator=(const GridData &data);    //赋值运算符重载，请注意定义的格式
};
#endif

---------------------------------griddata.cpp文件----------------------------------

GridData::GridData(){}
GridData::GridData(const GridData& data)        //拷贝构造函数
{

　　this->number=data.number;
　　this->date=data.date;
　　this->people_check=data.people_check;
　　this->people_record=data.people_record;
　　this->people_test=data.people_test;
　　this->title=data.title;
}
GridData& GridData::operator =(const GridData& data)     //赋值运算符重载
{

　　this->number=data.number;
　　this->date=data.date;
　　this->people_check=data.people_check;
　　this->people_record=data.people_record;
　　this->people_test=data.people_test;
　　this->title=data.title;

　　return *this;
}