Problem A: 你会定义类吗？

Problem A: 你会定义类吗？

Time Limit: 1 Sec   Memory Limit: 128 MB

Submit: 1373  

Solved: 1078

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Description

定义一个类Demo，有构造函数、析构函数和成员函数show()，其中show()根据样例的格式输出具体属性值。该类只有一个int类型的成员。

Input

输入只有一个整数，int类型范围内。

Output

见样例。

Sample Input

-100

Sample Output

A data 10 is created!A data 0 is created!A data -100 is created!This is data 10This is data 0This is data -100A data -100 is erased!A data 0 is erased!A data 10 is erased!

HINT

Append Code

append.cc,

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#include <iostream>
using namespace std;
class Demo
{
private :
    int x;
public:
    Demo(int y = 0)
    {
        cout<<"A data "<<y<<" is created!"<<endl;
        x = y;
    }
    void show()
    {
        cout<<"This is data "<<x<<endl;
    }
    ~Demo()
    {
        cout<<"A data "<<x<<" is erased!"<<endl;
    }
};
int main()
{
    Demo tmp(10), tmp2;
    int d;
    cin>>d;
    Demo tmp3(d);
 
    tmp.show();
    tmp2.show();
    tmp3.show();
    return 0;
}