8-7(

C++多态性程序例子

#include <iostream.h>

class F
{
public:
	double operator ()(double x, double y) const;
};

double F::operator ()(double x, double y) const
{
	return (x+5)*y;
}

void main()
{
	F f;
	cout<<f(1.5, 2.2)<<endl;
}