c语言 如何用switch语句编写一个有关商场购物金额优惠的选择程序

#include <stdio.h>

int main(int argc, char** argv)

{

int amount = 0

scanf("%d", &amount)//输入顾客购买的总额

int status = amount/1000

switch (status)

{

case 0: break

case 1: amount = amount * 0.95break

case 2: amount = amount*0.90break

case 3: amount *= 0.85break

default: amount *= 0.80break

}

printf("%d\n", amount)//打印出打折后的总额

return 0

}

#include <iostream>

using namespace std

int main()

{

float price

cout<<"输入原价:"<<endl

cin>>price

switch((int)price/1000)

{

case 5:price *=0.8break

case 4:

case 3:price *=0.85break

case 2:price *=0.9break

case 1:price *=0.95break

case 0:break

default:price *=0.8

}

cout<<"优惠价:"<<price<<endl

return 0

}

#include <stdio.h>

int main()

{

float totalprice=0,level=0 //总的消费额，打折等级标志

scanf("%d",&totalprice)

if(totalprice<=1000) level=1 //一共分为五等，不同等级，对应不同的优惠策略。

else if(totalprice>1000 &&totalprice<=2000) level=2

else if(totalprice>2000 &&totalprice<=3000) level=3

else if(totalprice>3000 &&totalprice<=5000) level=4

else level=5

switch(level) //一共分为五等，不同等级，对应不同的优惠策略。

{

case 1: printf("%f",totalprice)break

case 2: printf("%f",totalprice*0.95)break

case 3: printf("%f",totalprice*0.90)break

case 4: printf("%f",totalprice*0.85)break

default: printf("%f",totalprice*0.80)break

}

return 0

}

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