ex3_4.cpp

纯粹是学习专用～

#include <iostream.h>
void main(){
	float price,discount,amount;			//单价、折扣、总价
	int count;							  	//购买件数
	cout<<"输入单价:"<<endl;
cin>>price;
cout<<"输入购买件数:"<<endl;
	cin>>count;
	if(count<5)  discount=1;
	else if(count<10)  discount=0.9;
	     else  discount=0.8;
	amount=price*count*discount;
	cout<<"单价："<< price<<endl;
	cout<<"购买件数："<<count<<"\t\t"<<"折扣："<<discount<<endl;
	cout<<"总价："<<amount<<endl;
}