CSEC Information Technology Paper 2 May/June 2006 - Free CXC Past Paper with Answers

Consider the following method of calculating a discount on purchases:

Customers will be given a 5% discount on all purchases up to the first $100.00 spent at the store with a membership card. Without a membership card, the discount is 2%. A discount of 8% is given if the amount is greater than $100.00 and they have a membership card, otherwise the discount is 5%.

Illustrate the above using

a decision table

a decision tree.

You are given 200 questionnaires completed by drivers who pass a major intersection.

Explain why it is best to code responses of the questionnaire before data entry.

State TWO typical questions whose responses can be coded from the questionnaire and explain the coding options.

Perform the following calculations:

$11010_2 - 01100_2$

$11011_2 + 01100_2$

Construct a trace table using the customer number 6301 and purchase = $500.00.

Write a program code to perform EACH of the following:

Accept the customer number and value of the total purchases, calculate the discount and print, on three different lines, the Purchase Total, the Discount and the Final Cost (Purchase Total – Discount). Also print on one line, a running total of the total purchases and total discount.

Search for the customer who purchased $652.59. Print the customer number and the discount amount.

Explain THREE error checks that you would include in your code.

Write a program that

accepts the value for the amount of butter to be used

calculates the amount of sugar, cake flour and eggs, using the value entered for the butter

prints the ingredients (with amounts) one item per line.

Copy and complete the following table by providing values for missing ingredients.

Consider the table below which contains the cost of ingredients. If the variable 'x' is used to represent the amount of butter used in a mixture and the other values are found using this variable, develop programming code (e.g. Cost = ? + ? ...) which will provide the total cost of these ingredients.

Using the following program segment, write the missing lines of pseudocode that will help to identify the winner.

Program

Variables
    Integers    : Allstudents, Athletes, Cheerleaders, Musicians,
                  Regulars;
    Real        : Candidate1, Candidate2, Candidate3
Assignment
    AllStudents = 520
    Athletes    = 200
    Cheerleaders = 150
    Musicians   = 100
    Regulars    = 70
Calculations
    Candidate1 = (0.5 * Athletes) + (0.75 * Cheerleaders) + (0.1 * Musician) +
                 (0.15 * Regulars)
    Candidate2 = ________________________________________________ (5 marks)
    Candidate3 = ________________________________________________ (3 marks)
Condition/Decision Block

You may assume that no two candidates have the same number of votes. Write pseudocode to compare their votes and declare a winner. Your code must:

Compare each candidate with the others using If-Then-Else statements.

Print the sentence "The Winner is Candidate X" (X represents the candidate number of the winning candidate).

Copy and complete the following table if the value N = 5 is input.

Write a program in an acceptable programming language that manipulates each line of data in a file 'activity.dat'. The first variable type consists of either a D (for Deposit) or W (for withdrawal). Your program counts the number of deposits and withdrawals in the file and prints the count of the deposits and withdrawals on two separate lines.

Using 1 mile = 1.85 kilometers, write a program that will accept a value (in miles) as the speed measured by the car's speedometer. Convert that measurement to kilometers and alert the driver if he or she is traveling more than 90 km/hr (kilometers per hour).