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ABC Mail Order Grocery朝鲜蓟的售价是1

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ABC Mail Order Grocery朝鲜蓟的售价是1.25美元/磅，甜菜的售价是0.65美元/磅，胡萝卜的售价是0.89美元/磅。在添加运输费用之前，他们为100美元的订单提供5%的打折优惠。对5磅或以下的定单收取3.50美元的运输和装卸费用；超过5磅而不足20磅的定单收取1O.OO美元的运输和装卸费用：加磅或以上的运输，在8美元基础上每磅加收0.1美元。编写程序，在循环中使用switch语句，以便对输入a的响应是让用户输入所需的朝鲜蓟磅数，b为甜菜的磅数，c为胡萝卜的磅数，而q允许用户退出订购过程。然后程序计算总费用、折扣和运输费用（如果有运输费的话），以及总数。随后程序应该显示所有的购买信息：每磅的费用、订购的磅数、该订单每种蔬菜的费用、订单的总费用、折扣，如果有的话加上运输费用，以及所有费用的总数。

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#include <stdio.h>
#include <ctype.h> //需要调用tolower函数
#define ARTICHOKE 1.25 //单价
#define BEET 0.65
#define CARROT 0.89
#define DISCOUNT_LIMIT 100
#define DISCOUNT_RATE 0.05
#define FREIGHT_FEE1 3.50
#define FREIGHT_LIMIT1 5
#define FREIGHT_FEE2 10.00
#define FREIGHT_LIMIT2 20
#define FREIGHT_FEE3 8
#define FREIGHT_RATE 0.1
int main(void)
{
 char ch;
 double artichoke=0,beet=0,carrot=0;  //磅数
 double sum,discount,freight;
 printf("Please select your vegetable: a,b,c,q\n");
 printf("a.artichoke price:$%.2f\n",ARTICHOKE);
 printf("b.beet price:$%.2f\n",BEET);
 printf("c.carrot price:$%.2f\n",CARROT);
 printf("q.end\n");
 printf("(price as dollars per pound)\n");
 while( ( ch = tolower( getchar() )  ) != 'q') //tolower：大写转小写
 {
 switch(ch)
 {
 case 'a': printf("How many pounds of artichokes do you want?");
 scanf("%lf",&artichoke);
 printf("Please select your vegetable: a,b,c,q:");
 continue;
 case 'b': printf("How many pounds of beets do you want?");
 scanf("%lf",&beet);
 printf("Please select your vegetable: a,b,c,q:");
 continue;
 case 'c': printf("How many pounds of carrots do you want?");
 scanf("%lf",&carrot);
 printf("Please select your vegetable: a,b,c,q:");
 continue;
 default: break;
 }
 }
 printf("%10s%10s%10s%10s\n"," ","artichoke","beet","carrot");
 printf("%10s%10.2lf%10.2lf%10.2lf\n","price",ARTICHOKE,BEET,CARROT);
 printf("%10s%10.2lf%10.2lf%10.2lf\n","pound",artichoke,beet,carrot);
 printf("%10s%10.2lf%10.2lf%10.2lf\n","charge",ARTICHOKE * artichoke,BEET * beet,CARROT * carrot);
 sum = ARTICHOKE * artichoke + BEET * beet + CARROT * carrot;
 if (sum > DISCOUNT_LIMIT) discount = sum*DISCOUNT_RATE;
 else discount = 0;
 printf("discount: %.2f\n",discount);
 if (artichoke + beet + carrot <= 5) freight = 3.50;
 else if (artichoke + beet + carrot <20) freight = 10;
 else freight = 8 + (artichoke + beet + carrot) * 0.1;
 printf("freight: %.2f\n",freight);
 sum = sum - discount + freight;
 printf("sum: %.2f\n",sum);
 return 0;
}

发表于 2018-05-05 21:40:04 回复(0)

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C++

上传者：蜡蜡

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ABC Mail Order Grocery朝鲜蓟的售价是1

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