9-5.cpp

能理解C++中运算符重载的需要性

#include <iostream.h>

int Factor(int,int&,int&);

void main()
{
	int number,squared,cubed,error;
	cout<<"Enter a number(0~20)";
	cin>>number;

	error=Factor(number,squared,cubed);

	if(error)
		cout<<"Error encounted!\n";
	else
	{
		cout<<"Number:"<<number<<endl;
		cout<<"Squared:"<<squared<<endl;
		cout<<"Cubed:"<<cubed<<endl;
	}
}

int Factor(int n,int& rSquared,int& rCubed)
{
	if(n>20||n<0)
		return 1;
	rSquared=n*n;
	rCubed=n*n*n;
	return 0;
}