Quelpr
8 marksAlgorithm Verification and Development

CAPE Computer Science Unit 1 · 2015 · Paper 2 · Question 3(c)

An erroneous algorithm meant to print the cubes of all odd positive integers from 7 to 121 inclusive.

Identify and correct FOUR errors in the algorithm by referencing their specific line numbers.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)Explain what takes place during the 'implementation and review' stage of problem-solving.[4 marks]
  2. 3(b)(i)Identify which of the two algorithms illustrates unbounded iteration.[1 mark]
  3. 3(b)(ii)Identify which of the two algorithms illustrates bounded iteration.[1 mark]
  4. 3(b)(iii)Explain how the loop in Algorithm 1 is expected to terminate.[2 marks]
  5. 3(b)(iv)Explain how the loop in Algorithm 2 is expected to terminate.[2 marks]
  6. 3(d)Write an algorithm using iteration to calculate the sum of all multiples of 8 and all multiples of 11 between m (inclusive) and n (exclusive), where m and n…[7 marks]

More practice: the rest of this paper · more Algorithm Verification and Development questions · all CAPE Computer Science Unit 1 past papers