#include <stdio.h>
 #define QUIT 5
 #define HOTEL1 50.00
 #define HOTEL2 55.00
 #define HOTEL3 80.00
 #define HOTEL4 100.00
 #define DISCOUNT 0.95
 #define STARS "***************"
 int menu(void);
 int getnights(void);
 void showprice(double,int);
 int main(void)
 {
	int nights;
	double hotel;
	int code;

	while((code=menu())!=QUIT)
	{
		switch(code)
		{
			case 1: hotel=HOTEL1;
				break;
			case 2: hotel=HOTEL2;
				break;
			case 3: hotel=HOTEL3;
				break;
			case 4: hotel=HOTEL4;
				break;
			default: hotel=0.0;
				printf("0OPS!\n");
		}		break;
		nights=getnights();
		showprice(hotel,nights);
	}
	return 0;
 }
 int menu(void)
 {
 int code,status;

 printf("\n%s%s\n",STARS,STARS);
 printf("Enter the number of the desired hotel:\n");
 printf("1)fairfileld Arms      2)Hotel Olympic\n");
 printf("3)Chertworthy Plaza    4)The Stockton\n");
 printf("5)quit\n");
 printf("%s%s\n",STARS,STARS);
 while((status=scanf("%d",&code))!=1 || (code<1 ||code>5))
	{
	if (status!=1)
	scanf("%*s");

	printf("Enter an inter 1-5\n");
	}
	return code;
 }
 int getnights(void)
 {
	int nights;

	printf("How many nights are needed?");
	while(scanf("%d",&nights)!=1)
	{
		scanf("%*s");
		printf("Please enter an integer, such as 2.\n");
	}
	return nights;
 }
 void showprice(double hotel,int nights)
 {
	int n;
	double total=0.0;
	double factor=1.0;

	for(n=1;n<=nights;n++,factor*=DISCOUNT)
		total+=hotel*factor;
	printf("The total cost will be $%0.2f.\n",total);
 }