关于C++复制构造函数的实现讲解

#include <iostream>
#include <cstring>
using namespace std ; 
class Student 
{
 private :
 char name[8];
 int age ;
 char sex ; 
 int score ;
 public :
 void disp(); //打印信息的函数声明
 Student(char name[],int age , char sex ,int score); //构造函数声明
 Student(Student &dx); //复制构造函数的声明
 ~Student(); //析构函数的声明
};
//打印信息函数的实现
void Student::disp()
{
 cout << this->name << endl ; 
 cout << this->age << endl ; 
 cout << this->sex << endl ; 
 cout << this->score << endl ;
}
//构造函数的实现 
Student::Student(char name[],int age , char sex ,int score)
{
 strcpy(this->name,name);
 this->age = age ; 
 this->sex = sex ;
 this->score = score ;
}
//复制构造函数的实现
Student::Student(Student &dx)
{
 strcpy(this->name , dx.name);
 this->age = dx.age ; 
 this->sex = dx.sex ;
 this->score = dx.score ;
} 
//析构函数的实现
Student::~Student()
{
 cout << "程序结束" << endl ;
} 
int main(void)
{
 Student stu1("YYX",23,'N',86);
 Student stu2(stu1); 
 stu1.disp() ;
 stu2.disp() ;
 return 0 ;
}