#include?“iostream“
#include“string“
#include“fstream“
#include“iomanip“
using?namespace?std;
int?count1=0count11=0;??//學(xué)生總數(shù)和交錢的人數(shù)
int?count2=0count22=0;
class?Stu
{
public:
	Stu（double?xwater=0double?xpower=0double?xgas=0string?xnum=“a“string?xna=“a“）;???//學(xué)生類構(gòu)造函數(shù)
????void??operator??=（Stu?S）;???//賦值運(yùn)算符重載??????????????????????????????????????
???	friend??ostream?&operator?<<（ostream?&?aStu?&S）???//插入運(yùn)算符重載
		{	a<?		a<?		a<?		a<?		a<?		a<?		a<?		a<?		a<??????????if（S.flag）
??????????????a<<“已交“;
???????????????else?a<<“未交“;?
???????????????cout<???????????????return?a;	}
	?
	?double?SGetW（）;????????//計(jì)算水費(fèi)
	???double?SGetC（）;????????//計(jì)算電費(fèi)
???????double?SGetG（）;???????//計(jì)算煤氣費(fèi)
???????double?Stotal（）;?//計(jì)算總費(fèi)用

???????double?waterpowergaswater_ratecircuitgas_ratetotal;
	???int?flag;
	???string?numbername;
};


?Stu::Stu（double?xwaterdouble?xpowerdouble?xgasstring?xnumstring?xna）??//學(xué)生類構(gòu)造函數(shù)
?{
	water=xwater;power=xpower;gas=xgas;
????????number=xnum;name=xna;
????????flag=0;
	}

	void?Stu::operator??=（Stu??S）?????????//賦值運(yùn)算符重載
?	{
?		name=S.name;
?		number=S.number;
?		water=S.water;
?		power=S.power;
?		gas=S.gas;
?		
?		}

?	
double??Stu::SGetW（?）???????//計(jì)算水費(fèi)
{

if（water<10）?
?????water_rate=0;
else???
???????water_rate=4.2*（water-10）;
??return???water_rate;

}


double??Stu::SGetC（）??????//計(jì)算電費(fèi)
{

if（power<10）?
?????circuit=0;
else
???????circuit=0.6*（power-10）;??

return?circuit;
}?


double?Stu::SGetG（）??????????//計(jì)算煤氣費(fèi)
{

if（gas<10）
????gas_rate=0;
else
???gas_rate=2.3*（gas-10）;????

return?gas_rate;


}

double?Stu::Stotal（）????//計(jì)算總的錢
{
	total=SGetG（）+SGetW（）+SGetC（）;
	return?total;
	}





//*************************************************************************************

class?arrayofStu??//學(xué)生類計(jì)算
{
	public:
		arrayofStu（int?sz=1）????{size=sz;??student=new?Stu[size];}??//構(gòu)造函數(shù)
	????~arrayofStu（）???{?delete?[]?student;??}??
	???void??xuesheng（）;???????//學(xué)生用戶主菜單??
	???void?jiaofei（）;?????????//學(xué)生交費(fèi)菜單
	???void?regist（）;??????????//登記學(xué)生?
???????void?amend（?）;??????//修改用戶菜單
???????void??add（?）;??????//增加用戶
	???void?delet（）;???????//?刪除用戶菜單
???????void?nad（）;????????//姓名刪除
???????void?numd（）;??????????//學(xué)號(hào)刪除??
???????void?check（?）;??????//查詢菜單
???????void??nacheck（）;???????//姓名查詢
???????void?numcheck（）;?????//學(xué)號(hào)查詢
???????void?naj（）;?????????//輸入姓名交費(fèi)
???????void?numj（）;???????//輸入學(xué)號(hào)交費(fèi)
???????void?display（）;??//查看交費(fèi)情況
???????void?save（）;
???????
	private:
????????
?????????int?size;
?????????Stu??*student;
	??
	};


?

void?arrayofStu::regist（）????????//學(xué)生用戶注冊(cè)
{int?i=0;?

ifstream?f（“Stu.txt“）;
while（f.good（））??//?!f.eof（）
{
f>>student[i].number;
f>>st

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????338??2009-06-19?01:31??C++代碼\Stu.txt

?????文件????????337??2009-06-18?13:33??C++代碼\Teacher.txt

?????文件??????21829??2009-06-19?01:40??C++代碼\電煤氣管理系統(tǒng).cpp

?????目錄??????????0??2009-06-20?20:46??C++代碼

-----------?---------??----------?-----??----

????????????????22504????????????????????4