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6 marksAbstract Data Types (ADTs)

CAPE Computer Science Unit 2 · 2013 · Paper 2 · Question 1(a)(iii)

A stack is needed to store characters. Assume stack capacity is 1000 characters.

Write a function to pop a character from the stack, accounting for stack underflow.

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Other parts of this question

  1. 1(a)(i)Write code to declare the variables required for the stack.[2 marks]
  2. 1(a)(ii)Write a function to push a character, c, onto the stack, accounting for stack overflow.[4 marks]
  3. 1(b)(i)Explain what a 'linked list' is using a labelled diagram.[7 marks]
  4. 1(b)(ii)a)With the aid of a diagram, explain how a new node can be inserted at the top of the linked list.[3 marks]
  5. 1(b)(ii)b)With the aid of a diagram, explain how a new node can be inserted at the bottom of the linked list.[3 marks]

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