C语言相关程序

#include<iostream.h>
class r
{
private:
	int R1,R2;
public:
	r(int r1 ,int r2)
	{
		R1=r1;
		R2=r2;
	}
	void print();
	void print() const;
    
};
void r::print()
{
	cout<<R1<<":"<<R2<<endl;
}
void r::print() const
{
	cout<<R1<<","<<R2<<endl;
}
void main()
{
	r a(5,4);
	a.print();
    const r b(20,25)  ;
	b.print();
}