c++ 构造函数深层复制示例

/*******************************************************
*author：彭晓林
*copyright: 版权所有，翻版不究
*function: 构造函数深层复制示例
******************************************************/

#include <iostream>
#include <string>

using namespace std;

class DEMO
{
public:
DEMO(int a)
{
int* temp = new int;
x = temp;

*x = a;
}
void set(int a)
{
*x = a;
}
DEMO(DEMO &demo)
{
int* a = new int;

*a = *(demo.x);
*x = *a;
}
void print();

private:
int* x;
};

void DEMO::print()
{
cout<<"x = "<<*x<<endl;
cout<<"x address :"<<x<<endl;
}

int main()
{
DEMO* TestA = new DEMO(1);

TestA->print();

DEMO TestB(*TestA);

TestB.print();

TestB.set(32);

TestA->print();

TestB.print();

while(1);
}