9-11.cpp

一、教学目的： 能理解C++中运算符重载的需要性

#include <iostream.h>

double& fn(const double& pd)
{
	static double ad=32;
	ad+=pd;
	cout<<"fn being called...the value is:"<<pd<<endl;
	return ad;
}

void main()
{
	double a=345.6;
	double& pa=fn(a);
	cout<<pa<<endl;
	a=55.5;
    pa=fn(a);
	cout<<pa<<endl;
}