The cost of renting a room at a hotel is, say $100.00 per night. For special occasions, such as a wedding or conference, the hotel offers a special discount as follows: If the number of rooms booked is at least 10, the discount is 10%; at least 20, the discount is 20%; and at least 30, the discount is 30%. Also if rooms are booked for at least three days, then there is an additional 5% discount. Write a program that prompts the user to enter the cost of renting one room, the number of rooms booked, the number of days the rooms are booked, and the sales tax (as a percent). The program outputs the cost of renting one room, the discount on each room as a percent, the number of rooms booked, the number of days the rooms are booked, the total cost of the rooms, the sales tax, and the total billing amount. Your program must use appropriate named constants to store special values such as various discounts.

//Room rent

#include<iostream>

using namespace std;

int main()

{

double rent, sales, dis = 0;

int num, days;

double room_rent, total_rent,sales_tax;

cout<<"Enter the rent of one room: ";

cin>>rent;

cout<<"Enter the number of rooms to be booked: ";

cin>>num;

cout<<"Enter the number of days for which rooms need to be booked: ";

cin>>days;

cout<<"Enter the sales tax (in %): ";

cin>>sales;

if(num>=30)

dis = 0.3;

else if(num>=20)

dis = 0.2;

else if(num>=10)

dis = 0.1;

if(days>=3)

dis += 0.05;

total_rent = rent*num*days*(1-dis);

room_rent = total_rent/num;

cout<<"The cost of renting one room is "<<room_rent<<endl;

cout<<"The discount given is "<<100*dis<< "%.\n";

cout<<"The number of rooms booked is "<<num<<endl;

cout<<"The number of days rooms booked is "<<days<<endl;

cout<<"Total cost of the rooms = "<<total_rent<<endl;

sales_tax = (sales*total_rent)/100;

cout<<"Sales tax = "<<sales_tax<<endl;

cout<<"Total bill = "<<total_rent + sales_tax<<endl;

return 0;

}//end of main function

Explanation:

im confused need to go into details plz thx