demo_copy_constructor_6(临时对象).cpp

来自「对于一个初涉VC＋＋的人来书」· C++ 代码 · 共 38 行

//************************************************
// 函数返回值对象是临时对象，不能赋值给对象的引用。
//************************************************

# include <iostream.h>
# include <string.h>

class Student
{
public:
	Student(char* pName="No Name")
	{
		cout<<"Constructing new student "<<pName<<endl;
		strcpy(name,pName);
	}

	~Student()
	{
		cout<<"Destructing "<<name<<endl;
	}

protected:
	char name[20];
};

Student fn()
{
	Student ms("Jenny");
	cout<<"In function fn()"<<endl;
	return ms;
}

void main()
{
	Student& refs=fn();  //临时对象
}