a.txt

铁道出版社出版的C++的习题源代码

#include<iostream.h>
class A
{
public:
	A()
	{a=b=0;}
	A(int i,int j)
	{
	 a=i;b=j;
	}
	void copy(A &aa);
	void print()
	{
		cout<<a<<","<<b<<endl;
	}
private:
	int a,b;
};
void A::copy(A &aa)
{
	if(this==&aa)return;
	*this=aa;
}
void main()
{
	A a1,a2(3,4);
	a1.copy(a2);
	a1.print();
}