Important informartion Assignment 4 has two versions, i.e., the easy version (Full marks 70/100) and the difficult versi

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Important Informartion Assignment 4 Has Two Versions I E The Easy Version Full Marks 70 100 And The Difficult Versi 1 (166.1 KiB) Viewed 39 times

Important informartion Assignment 4 has two versions, i.e., the easy version (Full marks 70/100) and the difficult version (Full marks 100/100). You should select one among the two versions to work on. This document belongs to the difficult version If you submit answers of both versions, the marks of the difficult version will be used as the final marks of Assignment 4. Overview In this assignment, you are going to build a table booking system for a restaurant. Please read this assignment sheet carefully before starting your work. Reminders This assignment involves a lot of console input/output. You are reminded that the VPL system on HKU Moodle evaluates your program with a full score under the condition that your program output is the EXACT MATCH of the expected output. In other words, any additional or missing space character, newline character, etc., will be treated as errors during the evaluation of your program. Also, you are suggested to make more test cases on your own for testing your program. Assignment Specification and Requirement The table booking system allows table bookings, table allocations and relevant status checking. The customer who requests a booking needs to provide their personal information, dining date and the number of seats required. Once a booking is added to the system, the booking is in Pending state. The manager of the restaurant can then allocate tables to the booking to confirm the reservation. To facilitate checking and identification of booking, the system uses a ticket system to identify each booking. For each day, a ticket code sequence is maintained. The ticket code starts from 1 and is incremented by 1 when a new booking comes. Load tables information from a file The table information is defined in a text (.txt) file, in which each line defines a table, including the table code and the size (number of seats) of the table. Upon running the program, the program should ask the user to input the name of the text file and then loads the data into the system. Please refer to the sample input file and sample program output below for the exact input and output format. The text file has the following format: • Each line defines a table.
The first field is a two-digits number defining the table code of the table. You can assume the table code is in the range of [01 - 99). The second field defines the size of the table. You can assume it is an integer > 0. • Two fields are separated by a space character. You can assume lines are sorted by the table code in the file and the file contains at least one row. Table codes may not be consecutive. For example, a text file (file1.txt) contains the following: 01 2 02 2 03 4 04 4 05 12 06 12 This file defines 6 tables. Tables 01 and 02 are two-person tables, and tables 03 and 04 are four-person tables, etc. Below is the program output for loading data from the input file (Bold red texts are user input): Table file: file1.txt Imported 6 table(s). The above program has NOT terminated yet. • There is NO space character after the colon (:) and full stop (.). • Assume the input file and your program are placed in the same folder. You only need to input the filename instead of the full path of the file. Main menu - accept commands from the user After loading data from the input file, the system needs to accept commands continuously until "Exit" is received. Including the “Exit" command, you need to implement five commands for the system. Exit - terminate the program If the user enters “Exit", the program prints "Bye" and then terminates. Table file: file1.txt Imported 6 table(s). Exit Bye Book-request a booking The user can use the "Book" command to request a booking. The user input provides the contact name, phone member, dining date, and the number of seats needed. After receiving the booking, the system should assign it a ticket code. As mentioned, ticket codes for each day are unique, and it counts starting from 1. Please refer to the sample output below for the exact output format. • The date format in this assignment is DD-MM-YYYY. The contact name can contain space characters between English letters. • You can assume the phone number is 8-digit long.
Each data field in the user input is separated by a vertical bar (l). The "T" key is usually located below the backspace key in a standard keyboard layout. Upon completion, the system goes back to the main menu to accept the next command. In the test case below, 3 bookings are added to the system. Table file: file1.txt Imported 6 table(s). Book CK Lai 91234567 01-04-202210 Added booking. The ticket code for 01-04-2022 is 1. Book Tom 61234567 01-04-202213 Added booking. The ticket code for 01-04-2022 is 2. Book | Jolly 51234567 02-04-202215 Added booking. The ticket code for 02-84-2022 is 1. Exit Bye ListBookings This command lists all the bookings in the system. Each line shows one booking. For each booking, the contact name, phone number, date with ticket code, number of seats needed, and the booking status are printed If there is no booking in the system, print "No booking.". • The listing of bookings follows the ordering of user input. That means a newer booking is printed after the older one. For a pending booking, print "Pending". For a confirmed booking, the codes of the allocated tables are printed. The listing of table codes should be sorted ascendingly. Refer to the next section (Allocate Table) for details and the output format. Upon completion, the system goes back to the main menu. Table file: file1.txt Imported 6 table(s). ListBookings No booking. Book | HF | 8123456701-84-202215 Added booking. The ticket code for 01-04-2022 is 1. Book Liu|21234567 01-04-202212 Added booking. The ticket code for 01-04-2022 is 2. ListBookings Booking(s): HF, 81234567, 01-04-2022 (Ticket 1), 5, Pending. Liu, 21234567, 01-04-2022 (Ticket 2), 2, Pending. Exit Bye
Allocate Table This command allows the manager to allocate tables to a booking. Once tables are allocated, the booking will be changed to confirmed state. In the user input, the dining date and the ticket code are provided to identify the booking, followed by codes of tables to be allocated. After allocation, the system reports allocated tables. • Table codes are listed in ascending order in the program output, regardless of what order the user input is used. After allocation and printing, the system goes back to the main menu. In the test case below, tables 02, 03, 04 are allocated to the booking (Ticket 1) on 01-04-2022. Table file: filei.txt Imported 6 table(s). Book CK Lai|9123456701-84-202210 Added booking. The ticket code for 01-04-2022 is 1. Book Jia|61234567 01-04-20223 Added booking. The ticket code for 01-04-2022 is 2. AllocateTable 01-04-2022104 02 03 Allocated table(s). 01-04-2022 (Ticket 1): 02, 03, 04. ListBookings Booking(s): CK Lai, 91234567, 01-04-2022 (Ticket 1), 10, Assigned table(s): 02, 03, 04. Jia, 61234567, 01-04-2022 (Ticket 2), 3, Pending. Exit Bye You need to handle the following exceptional cases. You can assume NO MORE THAN ONE case would happen simultaneously in our test cases. If tables have been allocated to a booking, no further allocation to this booking can be made again. In this case, the system prints "Error: Table(s) already allocated to this booking.". • If a table is allocated to another booking on the same day, it cannot be used for this booking. In this case, print "Error: One or more tables allocated to another booking.". • If the total seats of suggested tables are not enough for the need of the booking, the system should abort the table allocation and print "Error: Not enough seats for this booking.". In the test case below, a certain table is allocated to CK Lai's booking. Therefore, the system aborts the second attempt of table allocation to the same booking. Table file: file1.txt Imported 6 table(s). Book CK Lai 91234567 01-04-202212 Added booking. The ticket code for 01-04-2022 is 1. AllocateTable 01-04-2022101 Allocated table(s). 01-04-2022 (Ticket 1): 01. AllocateTable 01-04-2022102 Error: Table(s) already allocated to this booking. Exit
Bye In the test case below, table 01 is allocated to CK Lai's booking (Ticket 1) on 01-04-2022. Therefore, it cannot be allocated to Donald's booking (Ticket 2) on the same day. Table file: file1.txt Imported 6 table(s). BookCK Lai|91234567 01-04-202212 Added booking. The ticket code for 01-04-2022 is 1. Book Donald|71234567 01-04-202216 Added booking. The ticket code for 01-04-2022 is 2. AllocateTable 01-04-2022101 Allocated table(s). 01-04-2022 (Ticket 1): 01. AllocateTable 01-04-2022201 03 Error: One or more tables allocated to another booking. Allocate Table 01-04-2022202 03 Allocated table(s). 01-04-2022 (Ticket 2): 02, 03. Exit Bye In the test case below, Snow White requested a booking for 8 persons to dine with seven little dwarfs. In the first attempt of table allocation, tables 01 and 02 can only provide 4 seats in total, which is not enough for the booking. Therefore, the system aborts the table allocation. In the second attempt, table 05 can provide 12 seats, which is enough for 8 persons. Thus, for this attempt, the system accepts the allocation. Table file: file1.txt Imported 6 table(s). Book Snow White 12345678|10-04-20228 Added booking. The ticket code for 10-04-2022 is 1. AllocateTable 10-04-20221 01 02 Error: Not enough seats for this booking. AllocateTable 10-04-2022105 Allocated table(s). 10-84-2022 (Ticket 1): 05. Exit Bye ListTableAllocation This command lists the status of table allocation on a particular date. In the user input, the date to be enquired is provided. • The listing of tables are sorted by table code. • If the table is allocated to a booking, print the ticket code. • If the table is available for allocation, print "Available". Table file: file1.txt
Imported 6 table(s). Book Alex|31234567 01-04-20223 Added booking. The ticket code for 01-04-2022 is 1. AllocateTable 01-04-2022|1|01 02 Allocated table(s). 01-04-2022 (Ticket 1): 01, 02. ListTableAllocation|01-04-2022 Table(s) on 01-04-2022: 01: Ticket 1 02: Ticket 1 03: Available 04: Available 05: Available 06: Available Exit Bye