unt - 优惠网

#include <iostream>
using namespace std;
class salesman
{
public:
salesman()
{
quantity=0;
price=0;
}
static float average();
static void display();
void total();
void set();
private:
static float discount;
static int n;
static float sum;
int quantity;
float price;
};
void salesman::set()
{
cout<< 销售件数 <<endl;
cin>>quantity;
cout<< 售货单价 <<endl;
cin>>price;

}
void salesman::total()
{
if(quantity>=10)
price=price*0.98;
sum+=quantity*price*discount;
n+=quantity;
}
float salesman::average()
{return(sum/n);}
float salesman::discount=0.9;
int salesman::n=0;
float salesman::sum=0;
void salesman::display()
{
cout<< 总销售款为 <<sum<<endl<< 平均售价为 <<salesman::average()<<endl;
}
int main()
{
salesman sal[3];
sal[0].set();
sal[0].total();
sal[1].set();
sal[1].total();
sal[2].set();
sal[2].total();
salesman::display();
return 0;
}
PS:上述答案不正确，我运行过了，以上答案是我修改过的，保证正确啊

#include<iostream.h>
class Xiao
{
public:
Xiao(int n,int q,double p):num(n),qua(q),price(p){}
void total();
static double average();
static double sum;
static int count;
static double discount;
static double zhe;
private:
int num;
int qua;
double price;

};
double Xiao::sum=0;
int Xiao::count=0;
double Xiao::discount=0.80;
double Xiao::zhe=0.98;
void Xiao::total()
{
if(qua>10) sum+=(price*zhe*qua);
else sum+=(price*qua);
count+=qua;
}
double Xiao::average()
{
return ((sum*discount)/count);
}
int main()
{
Xiao xia[3]={
Xiao(101,5,23.5),
Xiao(102,12,24.56),
Xiao(103,100,21.5)
};
for(int i=0;i<3;i++)
xia[i].total();
cout<< the sum of Xiao is : <<Xiao::sum<<endl;
cout<< the average price of Xiao is : <<Xiao::average()<<endl;
return 0;
}

#include<iostream>
using namespace std;
class Shop
{
public:
Shop(int m,int q,float p):num(m),quantity(q),price(p){};
void zongjia();
static float average();
static void display();
private:
int num;//人员号码
int quantity;//件数
float price;//单价
static float discount;//每天折扣
static float sum;//总金额
static int n;//总件数
};
void Shop::zongjia()
{
float rate=1.0;
if(quantity>10)rate=0.98*rate;
sum=sum+quantity*price*rate*(1-discount);
n=n+quantity;
}
void Shop::display()
{
cout<<sum<<endl;
cout<<average()<<endl;
}
float Shop::average()
{
return (sum/n);
}
float Shop::discount=0.05;
float Shop::sum=0;
int Shop::n=0;
int main ()
{
Shop s[3]={
Shop(101,5,23.5),
Shop(102,12,24.56),
Shop(103,100,21.5)
};
int i;
for(i=0;i<3;i++)
s[i].zongjia();
Shop::display();
return 0;
}

#include<iostream>
#include<string>
using namespace std;

class sale {
protected:
string num;//销货员号
int quantity;//销货件数
float price;//销货单价
static float discount;//折扣
static float sum;//总销售款
static int n;//销售总件数
public:
sale(string nu, int qu, float pr);
static float average();//求平均售价
static void display();//输出结果
};

sale::sale(string nu, int qu, float pr)
{
num = nu;
price = pr;
if (qu >= 10)
quantity = qu * 0.98;
else
quantity = qu;
sum += quantity * price * discount;
n += quantity;
}

float sale::discount = 0.9;
float sale::sum = 0;
int sale::n = 0;
float sale::average()
{
return sum / n;
}
void sale::display()
{
float a = average();
cout << 当日总销售额为： << n << \n << 每件商品的平均售价为： << a << endl;
}

int main()
{
sale s1( 101 , 5, 23.5);
sale s2( 102 , 12, 24.56);
sale s3( 103 , 100, 21.5);
sale::display();
return 0;

}

#include <iostream>
using namespace std;
class salesman
{
public:
salesman()
{
quantity=0;
price=0;
}
static float average();
static void display();
void total();
void set();
private:
static float discount;
static float sum;
static int n;
int quantity;
float price;
};
void salesman::set()
{
cout<< 销售件数 <<endl;
cin>>quantity;
cout<< 售货单价 <<endl;
cin>>price;
}
void salesman::total()
{
if(quantity>=10)
price=price*0.98;
sum+=quantity*price*discount;
n+=quantity;
}
float salesman::average()
{
return(sum/n);
}
float salesman::discount=0.9;
int salesman::n=0;
float salesman::sum=0;
void salesman::display()
{
cout<< 总销售款为 <<sum<<endl<< 平均售价为 <<salesman::average()<<endl;
}
int main()
{
salesman sal[3];
sal[0].set();
sal[0].total();
sal[1].set();
sal[1].total();
sal[2].set();
sal[2].total();
salesman::display();
}

cheap
adj.便宜的，廉价的; 劣质的，低劣的; 小气的，可鄙的
adv.便宜地; 卑鄙地

discount
vt.打折扣，减价出售; 减息贷款; 削价出售，打折; 减价，减量
vi.折扣; 贴现率; 贴现
n.贴现; 数目; （任何面值上的）扣除额; （考虑到故事、报告、报道等的夸张或偏见等）不全信

cheap是形容词，便宜的意思

dicount是名称，折扣的意思，一般与百分数连用，比如 ninty percent dicounts

n.z折扣
a 90% discount打九折
get/dive/offer discount得到/给予/提供折扣
v.1.认为..不重要
discount sth.
2.打折
discounted prices打折价 名词 n. [C][U]

1.折扣;打折扣
We give a special discount of 10 per cent for cash.
如用现金购买,我们给予九折优待。
2.贴现;贴现率
3.不全信
The author s conclusions must be taken at a discount.
作者的结论我们不应全信。

及物动词 vt.

1.将...打折扣;将商品打去...折扣
That store discounts all its slow-selling goods.
那家商店削价出售所有滞销货。
2.将...贴现
3.不全相信;怀疑地看待
You must discount much of what he says.
他说的好些话,你必须打个折扣听。
4.漠视;低估,贬损
In his plans he discounted the expense.
他在计划中没有考虑费用。
5.预计到
The price of the stock fell before its dividend was reduced, for the reduction had already been discounted.
股票的价格在股息降低之前下跌,因为股息降低早在预料之中。

不及物动词 vi.

1.打折扣出售商品
Many stores do not discount at all.
许多商店出售商品一概不打折扣。
2.贴现