constructor_destructor_2_a_ok.cpp

对于一个初涉VC＋＋的人来书

//***************************************************

# include <iostream>
# include <string>

using namespace std;

class Student
{
public:
	Student(string nam)
	{
		cout<<"Constructor "<<nam<<endl;
		name=nam;
	}
	Student(Student & s)
	{
		cout<<"Constructor Copy "<<s.name<<endl;
		name=s.name;
	}
	~Student() //不管是否打开析构函数,程序都执行拷贝构造!
	{
		cout<<"Destructor "<<name<<endl;
	}
private:
	string name;
};

int main()
{
	Student s=Student("Jenny"); //用无名对象初始化对象

	cout<<"End of main()"<<endl;

	return 0;
}

/*
Constructor Jenny       //首先调用构造函数,创建一个无名对象
Constructor Copy Jenny  //而后调用拷贝构造函数,拷贝构造对象s
Destructor Jenny        //拷贝完成后,无名对象析构消失
End of main()           //主函数执行完成
Destructor Jenny        //对象s析构消失
*/