A Level Computer Science 9618 Paper 42, May/June 2023

Write program code to declare the global string array Animals to store 10 items. Save your program as Question1_J2023. Copy and paste the program code into part 1(a) in the evidence document.

The main program needs to store the following animals in the array: horse lion rabbit mouse bird deer whale elephant kangaroo tiger Write program code to store these animal names in the array. The names must be in lower case and stored in the order given in the list. Save your program. Copy and paste the program code into part 1(b) in the evidence document.

The following pseudocode procedure sorts the array into a descending alphabetical order using only the first character in each animal name. The function LENGTH(DataArray) returns the number of elements in the array DataArray. The function MID(String, Start, Quantity) returns Quantity number of characters from String starting at index Start. The first character in the string is index 0, for example: MID("tiger", 0, 2) will return "ti" There are four incomplete statements in the procedure. PROCEDURE SortDescending() DECLARE ArrayLength : INTEGER DECLARE Temp : STRING ArrayLength LENGTH(Animals) FOR X 0 TO ArrayLength - 1 FOR Y ……………… TO ArrayLength - X - 1 IF MID(Animals[Y], 0, 1) < MID(Animals[………………], 0, 1) THEN Temp Animals[………………] Animals[Y] Animals[Y + 1] Animals[Y + 1] ……………… ENDIF NEXT Y NEXT X ENDPROCEDURE Write program code for the procedure SortDescending(). Save your program. Copy and paste the program code into part 1(c) in the evidence document.

Write program code to amend the main program to: • call the procedure SortDescending() • output the sorted contents of the array with each animal name on a new line. Save your program. Copy and paste the program code into part 1(d)(i) in the evidence document.

Test your program. Take a screenshot of the output. Save your program. Copy and paste the screenshot into part 1(d)(ii) in the evidence document.

Write program code to declare a record structure, SaleData, to store the data about each sale. Save your program as Question2_J2023. Copy and paste the program code into part 2(a) in the evidence document.

Write program code to: • declare a global array, CircularQueue, of 5 items to store the sale records • declare the global pointers Head and Tail • declare the global variable NumberOfItems • initialise all elements of the array CircularQueue to an empty record, where the ID is null ("") and quantity is -1 • initialise Head, Tail and NumberOfItems to 0 Save your program. Copy and paste the program code into part 2(b) in the evidence document.

The function Enqueue(): • takes a new record as a parameter • inserts the record in the circular queue at the element pointed to by Tail • updates pointers and other variables as required • returns −1 if the circular queue is full • returns 1 if the record is stored successfully. Write program code for the function Enqueue(). Save your program. Copy and paste the program code into part 2(c) in the evidence document.

The function Dequeue(): • returns a null or empty record if the circular queue is empty • returns the first record in the queue if the circular queue is not empty • updates pointers and other variables as required. Write program code for the function Dequeue(). Save your program. Copy and paste the program code into part 2(d) in the evidence document.

The procedure EnterRecord(): • takes an ID and quantity as input and creates a sale record • uses Enqueue() to insert the record in the circular queue • outputs "Full" if the record was not inserted in the circular queue • outputs "Stored" if the record was inserted in the circular queue. Write program code for the procedure EnterRecord(). Save your program. Copy and paste the program code into part 2(e) in the evidence document.

The following sale records need to be entered into the program:

Amend the main program to: • use EnterRecord() to input the six records in the table • use Dequeue() to remove one record • output either the ID and quantity of the removed record, or an error message if the circular queue is empty • use EnterRecord() to input the record with the ID "LLP" for a second time • output the ID and quantity for all the records currently stored in the array CircularQueue. Write program code to perform these tasks. Save your program. Copy and paste the program code into part 2(f)(i) in the evidence document.

Test your program. Take a screenshot of the output. Save your program. Copy and paste the screenshot into part 2(f)(ii) in the evidence document.

Write program code to declare the class Employee. You only need to declare the class and its constructor. Do not declare any other methods. Use your programming language appropriate constructor. If you are writing program code in Python, include attribute declarations using comments. Save your program as Question3_J2023. Copy and paste the program code into part 3(a)(i) in the evidence document.

The method GetEmployeeNumber() returns the employee number. Write program code for the method GetEmployeeNumber(). Save your program. Copy and paste the program code into part 3(a)(ii) in the evidence document.

The method SetPay(): • takes a week number and the number of hours worked that week as parameters • calculates the pay for that week by multiplying the hourly pay by the number of hours worked that week • stores the calculated pay in the appropriate index for that week in PayYear2022. Write program code for the method SetPay(). Save your program. Copy and paste the program code into part 3(a)(iii) in the evidence document.

The method GetTotalPay() returns the total of all the values in PayYear2022. Write program code for the method GetTotalPay(). Save your program. Copy and paste the program code into part 3(a)(iv) in the evidence document.

The child class Manager inherits from the parent class Employee. A manager gets a bonus. This bonus value is a percentage, for example 10.0%. When calculating the pay, the number of hours the manager worked that week is increased by the bonus value. Manager BonusValue : REAL — stores the bonus value, for example 10.0 represents a 10.0% increase Constructor() — takes bonus value, hourly pay, employee number and job title as parameters; initialises BonusValue to its parameter value SetPay() — takes the week number and number of hours worked as parameters; increases the number of hours worked by the bonus value; calls the SetPay() method from the parent class Write program code to declare the class Manager. You only need to declare the class and its constructor. Do not declare any other methods. Use your programming language appropriate constructor. If you are writing in Python, include attribute declarations using comments. Save your program. Copy and paste the program code into part 3(b)(i) in the evidence document.

The Manager method SetPay() overrides the method from the parent class and: • takes the week number and number of hours worked as parameters • increases the number of hours worked by the bonus value • calls SetPay() from the parent class. Write program code for the method SetPay(). Save your program. Copy and paste the program code into part 3(b)(ii) in the evidence document.

The main program has a global 1D array, EmployeeArray, to store data about eight employees. Each employee is stored as an object of type Employee. The file Employees.txt stores data about the employees, in the order: • hourly pay • employee number • bonus value (where included) • job title. Only employees who are managers have a bonus value saved. For example: • The first employee is a Junior Developer, with employee number 12452 and an hourly pay of $15.22. This employee does not have a bonus value. • The third employee is an Interface Manager, with employee number 02586 and an hourly pay of $22.50. This employee has a bonus value of 5.25%. Write the main program to: • declare the array to store data about 8 employees • read in the data from the file for each employee • instantiate each employee as either Employee (if the employee does not have a bonus value) or Manager (if the employee has a bonus value). Save your program. Copy and paste the program code into part 3(c) in the evidence document.

The file HoursWeek1.txt stores the number of hours each employee has worked in week 1, in the order: • employee number • number of hours worked. For example, the first set of data is for employee 21548 who has worked 50.0 hours. The procedure EnterHours(): • reads in the values from the file • finds the location of each employee in EmployeeArray • calls the method SetPay() for each employee. Write program code for EnterHours(). Save your program. Copy and paste the program code into part 3(d) in the evidence document.

The main program needs to call EnterHours() and use the method GetTotalPay() to output the employee number and total pay for each of the eight employees. Amend the main program to perform these tasks. Save your program. Copy and paste the program code into part 3(e)(i) in the evidence document.

Test your program. Take a screenshot of the output. Save your program. Copy and paste the screenshot into part 3(e)(ii) in the evidence document.