[YTU]

xiaoxiao2021-02-28  72

题目描述

xiaoping刚接触类的构造和析构函数,对于构造函数的编写比较困惑。zhuangzhuang给小平布置了一道题目,xiaoping苦思两天也无法解答,请你帮帮xiaoping吧。

#include <iostream> using namespace std; class XiaoPing { private:     int state;   //用来记录是否有参数     int data; public:

    XiaoPing();     XiaoPing(int data);     ~XiaoPing(); }; //

只需完成并提交该部分代码

/// XiaoPing::~XiaoPing() {     if(state)         cout<<"destroy an object with a parameter:"<<data<<endl;     else         cout<<"destroy an object with no parameter"<<endl; } int main() {     int data;     XiaoPing zeropara1;     cin>>data;     XiaoPing onepara1(data);     XiaoPing zeropara2;     cin>>data;     XiaoPing onepara2(data);     return 0; }

输入

输入两行。每行一个整数,表示构造函数的参数值。

输出

按照题意输出构造函数和析构函数的调用顺序和信息。

样例输入

1 2

样例输出

create an object with no parameter create an object with a parameter:1 create an object with no parameter create an object with a parameter:2 destory an object with a parameter:2 destory an object with no parameter destory an object with a parameter:1 destory an object with no parameter#include <iostream> using namespace std; class XiaoPing { private: int state; //用来记录是否有参数 int data; public: XiaoPing(); XiaoPing(int data); ~XiaoPing(); }; XiaoPing::XiaoPing() { state=0; } XiaoPing::XiaoPing(int d) { state=1; data=d; cout<<"create an object with no parameter"<<endl; cout<<"create an object with a parameter:"<<data<<endl; } XiaoPing::~XiaoPing() { if(state) cout<<"destory an object with a parameter:"<<data<<endl; else cout<<"destory an object with no parameter"<<endl; } int main() { int data; XiaoPing zeropara1; cin>>data; XiaoPing onepara1(data); XiaoPing zeropara2; cin>>data; XiaoPing onepara2(data); return 0; }
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