proj9_09.cpp

C++程序设计教程的全部源代码 包含与教程同步的PPT 方便学习

#include <iostream.h>
//类lfeet
class LMetres;
class Lfeet
{
private:
	int feet;
	float inches;
public:
	Lfeet(int = 0,float = 0);
	void display()
	{cout << "feet = " << feet << "   inches = "<< inches << endl;}
};
//类lmetres
class LMetres
{
private:
	float metres;
public:
	LMetres(float = 0);
	void display(){cout << "     metres" << metres << endl;}
	//在源类中定义转换函数
	operator Lfeet()
	{
		float ffeet,inc;
		int ifeet;
		ffeet = 3.28 * metres;
		ifeet = int(ffeet);
		inc = 12 * (ffeet - ifeet);
		return Lfeet(ifeet , inc);
	}
	float getmetres(){return metres;}
};
//Lfeet构造函数
Lfeet::Lfeet(int ft,float in)
{
	feet = ft;
	inches = in;
}
LMetres::LMetres(float m)
{metres = m;}
void main()
{
	LMetres m1(1.0);
	Lfeet f1;
	f1 = m1; //	f1=Lfeet(m1); 
	f1.display(); 
}