#include<stdio.h>
#define QUIT 5;
#define HOTEL1 80.00;
#define HOTEL2 125.00;
#define HOTEL3 155.00;
#define HOTEL4 200.00;
#define DISCOUNT 0.95;
#define STARS "***********************"
/*给出选项列数*/
int menu();
//返回预订的天数
int getnights();
//按饭店的星级和预订的天数计算价格并显示出来
void price(double,int);

void main()
{
 int nights;
 int code;
 double hotel_rate;
 while((code=menu()) != QUIT)//运行讲这一行错了error C2143: syntax error : missing ')' before ';'
 {
  switch(code)
  {
  case 1:hotel_rate=HOTEL1;
      break;
  case 2:hotel_rate=HOTEL2;
      break;
  case 3:hotel_rate=HOTEL3;
      break;
  case 4:hotel_rate=HOTEL4;
      break;
  default:hotel_rate=0.0;
      printf("error");
      break;
  }
 nights=getnights();
 price(hotel_rate,nights);
 }
printf("Thank you and goodbye");
}

/*hotel.c--旅馆管理函数*/
#include<stdio.h>

int menu()
{
 int code,status;
 printf("\n%s%s",STARS,STARS);
 printf("Enter the number of the desired hotel:\n");
 printf("1) Fairfield Arms       2) Hotel Olympic");
 printf("3) Chertworthy Plaza    4) The Stockton");
 printf("5) QUIT");
 printf("%s%s",STARS,STARS);
 while((status=scanf("%d",&code))!=1||(code<1||code>5))
 {
 scanf("%*s");
 printf("Please enter a integer from 1 to 5.\n");
 }
return code;
}

int getnights()
{
 int nights;
 printf("How many nights are needed?\n");
 while(scanf("%d",&nights)!=1)
 {
 scanf("%*s");
 printf("Please enter a integer,such as 2.\n");
 }
return nights;
}

void price(double rate,int nights)
{
 int n;
 double total=0.0;
 double factor=1.0;
 for(n=1;n<=nights;n++,factor*=DISCOUNT)
 {
 total+=rate*factor;
 }
printf("The total cost will be %0.2f.\n",total);
}

懂懂  谢啦 。。。。