Branches are common programming constructs in programming applications

Full Answer Section

public class HotelDiscount {

  public static double calculateDiscountedRate(int guestAge, double regularRate) {
    if (guestAge >= 65) {
      return regularRate * 0.8;
    } else {
      return regularRate;
    }
  }

  public static void main(String[] args) {
    int guestAge = 70;
    double regularRate = 100.00;

    double discountedRate = calculateDiscountedRate(guestAge, regularRate);

    System.out.println("Discounted rate for " + guestAge + " year old guest: $" + discountedRate);
  }
}

Sample Solution

Branching for Senior Guest Discounts

Here's how to create a branching construct to calculate a discounted hotel rate for guests 65 and older in various programming languages:

1. Pseudocode (Language-independent):

GuestAge = GetGuestAge()

IF GuestAge >= 65 THEN
  DiscountedRate = RegularRate * 0.8  (20% discount)
ELSE
  DiscountedRate = RegularRate
ENDIF

Display DiscountedRate

This pseudocode outlines the logic:

• We get the guest's age.
• We check if the age is greater than or equal to 65.
  • If yes, we calculate the discounted rate by multiplying the regular rate by 0.8 (100% - 20% discount).
  • If no, the discounted rate remains the same as the regular rate.
• Finally, we display the discounted rate.

2. Translating to Specific Languages:

Here's an example in Python and Java:

Python:

def calculate_discounted_rate(guest_age, regular_rate):
  if guest_age >= 65:
    discounted_rate = regular_rate * 0.8
  else:
    discounted_rate = regular_rate
  return discounted_rate

# Example Usage
guest_age = int(input("Enter guest age: "))
regular_rate = float(input("Enter regular rate: "))

discounted_rate = calculate_discounted_rate(guest_age, regular_rate)

print(f"Discounted rate for {guest_age} year old guest: ${discounted_rate:.2f}")