拷贝构造函数与默认拷贝构造函数

#include <iostream>
#include <string.h>
using namespace std;

class Student
{
public:
	Student(char *pName = "no name", int ssId = 0)
	{
		id = ssId;
		strcpy(name,pName);
		cout<<"constructing new student "<<name<<endl;
	}
	Student(Student &s)
	{
		cout<<"constructing copy of "<<s.name<<endl;
		strcpy(name,"copy of ");
		strcat(name,s.name);
		id = s.id;
	}
	~Student()
	{
		cout<<"Destructing "<<name<<endl;
	}
protected:
	char name[40];
	int id;
};

void fn(Student s)
{
	cout<<"In function fn()\n";
}

class Tutor
{
public:
	Tutor(Student &s):student(s)
	{
		cout<<"Construction tutor"<<endl;
	}
protected:
	Student student;
};

/*
调用默认拷贝构造函数,完成一个成员一个成员的拷贝.
如果成员是类对象,则调用其拷贝构造函数或者默认拷贝构造函数
*/
void fn2(Tutor tutor)
{
	cout<<"In function fn2()"<<endl;
}

void main()
{
	//Student randy("randy",1234);
	//cout<<"Calling fn()"<<endl;
	//fn(randy);
	//cout<<"Returned from fn()"<<endl;

	Student randy("randy",1234);
	Tutor tutor(randy);
	cout<<"Calling fn2()"<<endl;
	fn2(tutor);
	cout<<"Returned from fn2()"<<endl;

}