Pseudo Code for Car Management System

Functions Overview

The car management system includes the following core functionalities:

1. Get boolean input from the user for specific prompts.
2. Add a car with necessary details.
3. View available cars.
4. Buy, rent, and return cars.
5. Initialize default cars for the system.

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1. Get Boolean Input Function

Function to prompt the user for a yes/no input, ensuring valid integer input.

FUNCTION get_boolean_input(prompt):
    WHILE TRUE:
        GET value FROM USER
        IF value == 0 OR value == 1:
            RETURN CONVERT value TO BOOLEAN
        ELSE:
            PRINT "Invalid integer. Please enter 1 for yes or 0 for no."

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2. Add Car Function

Function to add a car to the system while checking for restrictions.

FUNCTION add_car():
    IF num_cars >= MAX_CARS:
        PRINT "Maximum number of cars reached."
        RETURN

    GET brand FROM USER
    GET model FROM USER
    
    FOR SALE = get_boolean_input("Is the car for sale? (1 for yes, 0 for no): ")
    IF FOR SALE:
        GET sell_price FROM USER
    ELSE:
        SET sell_price = 0.0

    FOR RENT = get_boolean_input("Is the car for rent? (1 for yes, 0 for no): ")
    IF FOR RENT:
        GET rent_price_rate FROM USER
    ELSE:
        SET rent_price_rate = 0.0

    IF NOT FOR SALE AND NOT FOR RENT:
        PRINT "Error: The car must be either for sale or for rent."
        RETURN

    SET brands[num_cars] = brand
    SET models[num_cars] = model
    SET sell_prices[num_cars] = sell_price
    SET rent_price_rates[num_cars] = rent_price_rate
    SET for_sell[num_cars] = FOR SALE
    SET for_rent[num_cars] = FOR RENT
    SET sold[num_cars] = FALSE
    SET rented[num_cars] = FALSE

    INCREMENT num_cars
    PRINT "Car added successfully."

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3. View Cars Function

Function to display the list of cars and allow selection.

FUNCTION view_cars():
    PRINT "----- View Cars -----"
    IF num_cars == 0:
        RETURN -1

    PRINT HEADER FOR CAR LIST
    FOR i FROM 0 TO num_cars - 1:
        DETERMINE status (Sold, Rented, Available)
        FORMAT sell_price AND rent_price
        PRINT car DETAILS

    WHILE TRUE:
        GET car_choice FROM USER
        IF car_choice == 0:
            RETURN 0
        ELSE IF 1 <= car_choice <= num_cars:
            RETURN car_choice
        ELSE:
            PRINT "Invalid car selection."

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4. Buy Car Function

Function to handle the purchase of a car.

FUNCTION buy_car(car_index):
    IF sold[car_index]:
        PRINT "Car already sold."
    ELSE IF rented[car_index]:
        PRINT "Car currently rented."
    ELSE IF NOT for_sell[car_index]:
        PRINT "Car not for sale."
    ELSE:
        SET sold[car_index] = TRUE
        PRINT "Car bought successfully. Cost: sell_prices[car_index]"

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5. Rent Car Function

Function to handle the renting of a car.

FUNCTION rent_car(car_index):
    IF sold[car_index]:
        PRINT "Car already sold."
    ELSE IF rented[car_index]:
        PRINT "Car currently rented."
    ELSE IF NOT for_rent[car_index]:
        PRINT "Car not for rent."
    ELSE:
        SET rented[car_index] = TRUE
        PRINT "Car rented successfully. Cost: rent_price_rates[car_index] per day"

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6. Return Car Function

Function to handle the return of a rented car.

FUNCTION return_car(car_index):
    IF NOT rented[car_index]:
        PRINT "Car is not rented."
    ELSE:
        SET rented[car_index] = FALSE
        PRINT "Car returned successfully."

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7. Initialize Default Cars Function

Function to populate the system with initial car data.

FUNCTION initialize_default_cars():
    SET default_cars TO A LIST OF DEFAULT CARS
    FOR EACH car IN default_cars:
        ADD car TO brands, models, sell_prices, rent_price_rates, for_sell, for_rent, sold, rented
        INCREMENT num_cars

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8. Main Function

Control the flow of operations in the car management system.

FUNCTION main():
    CALL initialize_default_cars()
    WHILE TRUE:
        GET choice FROM display_main_menu()
        IF choice == "1":
            CALL add_car()
        ELSE IF choice == "2":
            SET car_choice = CALL view_cars()
            IF car_choice == 0:
                CALL clear_terminal()
                PRINT "Going back to main menu..."
            ELSE IF car_choice >= 1:
                SET car_action = CALL display_car_actions_menu(car_choice - 1)
                IF car_action == 1:
                    CALL buy_car(car_choice - 1)
                ELSE IF car_action == 2:
                    CALL rent_car(car_choice - 1)
                ELSE IF car_action == 3:
                    CALL return_car(car_choice - 1)
                ELSE IF car_action == 0:
                    CALL clear_terminal()
                    PRINT "Going back to main menu..."
            ELSE:
                PRINT "No cars available."
        ELSE IF choice == "3":
            PRINT "Exiting program."
            BREAK
        ELSE:
            PRINT "Invalid choice. Please enter a number between 1 and 3."
        PRINT " "

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Main Execution

To start the program, the following structure serves as the entry point:

IF __name__ == "__main__":
    CALL main()

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This pseudo code provides a clear and structured documentation of a car management system. Each function and its logic is presented in a straightforward manner, allowing for intuitive understanding and potential implementation in a programming language.