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d. Applied Task

VCE Applied Computing - Student Task Sheet

Unit 1 Area of Study 2 - Control Structures and Validation

Scenario

You are designing a Club Sign-Up Checker.

The solution should:

  • ask the student to enter their year level
  • reject blank input
  • reject non-numeric input
  • reject values outside the allowed range of 7 to 12
  • keep asking until a valid value is entered
  • display a confirmation message once the input is accepted

Task 1 - Identify the logic

(4 marks)

a. Identify one control structure needed for the repeated input process.

b. Identify one control structure needed for the decision-making process.

c. Explain why each is suitable.

Task 2 - Validation planning

(4 marks)

List the validation checks required and state the best order to apply them.

Briefly justify the order you chose.

Task 3 - Pseudocode

(6 marks)

Write pseudocode that:

  • asks for the year level
  • applies the required validation
  • repeats until the input is valid
  • displays a confirmation message

Task 4 - Reflection

(4 marks)

Explain how poor control structure choice or poor validation could cause this program to behave incorrectly.

You may refer to:

  • infinite loops
  • wrong branches running
  • invalid data being accepted

Extension Discussion (2 marks optional)

Describe one situation where a FOR loop would be less suitable than a WHILE or DO/WHILE loop.