ex5_1.cpp

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#include<iostream.h>
#include<iomanip.h>
#include<string.h>

class CGoods{
private :
	char 	Name[21] ;
	int  	Amount ;
	float 	Price ;
	float	Total_value ;
public :
	void 	RegisterGoods(char*,int,float) ;
	void 	CountTotal(void) ;
	void 	GetName(char*) ;
	int 	GetAmount(void) ;
	float 	GetPrice(void) ;
	float 	GetTotal_value(void) ;
};
void CGoods::RegisterGoods(char* name , int amount , float price){
	strcpy(Name , name) ; Amount=amount ; Price=price ;
}
void CGoods::CountTotal(void){
	Total_value = Price*Amount;
}
void CGoods::GetName(char*  name){
	strcpy(name , Name);
}
int  CGoods::GetAmount(void){
	return(Amount) ;
}
float CGoods::GetPrice(void){
	return(Price) ;
}
float CGoods::GetTotal_value(void){
	return(Total_value) ;
}

void main( ){
	CGoods	 car ;
	char  string[21] ;
	int	number ;
	float  pr ;
	cout<<"请输入汽车型号：" ;
	cin.getline(string , 20) ; //输入串长必须小于20
	cout<<"请依次输入汽车数量与单价：" ;
	cin>>number>>pr ;
	car.RegisterGoods(string , number , pr) ;
	car.CountTotal() ;
	string[0]='\0' ; //字符串string清零
	car.GetName(string) ; //string赋值car.Name
	cout<<setw(20)<<string<<setw(5)<<car.GetAmount() ; //A
	cout<<setw(10)<<car.GetPrice()<<setw(20)<<car.GetTotal_value()<<endl ; //B
}