c13_07.cpp

it can help you use C++ program we

#include <iostream>
using namespace std;
class X 
{
	int		m_ivar; 
public:
	X (int i)					//构造函数
	{  m_ivar = i;  }
	X (const X& Other)			//拷贝构造函数
	{  m_ivar = Other.m_ivar;  }
	void print()
	{  cout<<"m_ivar = "<<m_ivar<<endl;  }
};

int main( )
{
	X	x1(1);					//调用X(int i)
	x1.print();
	X	x2(x1);					//调用X(const X&)
	x2.print();
	X	x3 = x2;				//调用构造函数X(const X&)
	x3.print();

	return 0;
}