5_8.cpp

《C++语言程序设计（第2版）》例题程序

#include<iostream.h>
class R
{
public:
	R(int r1, int r2){R1=r1;R2=r2;}
	void print();
	void print() const;
private:
	int R1,R2;
};

void R::print()
{   
	cout<<R1<<":"<<R2<<endl;
}
void R::print() const
{   
	cout<<R1<<";"<<R2<<endl;
}
void main()
{
	R a(5,4);
	a.print();  //调用void print()
	const R b(20,52);  
	b.print();  //调用void print() const
}