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1CP2-CT-4.7 Formatting structures validation and search checkpoint

Part 7 of 7 · 1CP2-CT-4 · Structures, validation and search

The checkpoint for the whole series, integrating formatting, structures, validation and search.

Students will:

  • choose the format descriptor a stated presentation requires
  • explain both indexes of a two-dimensional read
  • describe a validation routine including its control structure
  • state the comparisons a complete search of an absent target makes
  • write an integrated program and correct a fixed-row search error

Inside: 4 explanation cells, 3 multiple-choice questions, 1 Python task, 1 fill-in-the-blanks cell and 3 written answers. 20 marks, about 45 minutes.

Series: 1CP2-CT-4 · Structures, validation and search, part 7 of 7.

Shared by Coding PathwayVerified teacher

  • 12 cells
  • About 45 minutes
  • CC BY-SA 4.0
  • Shared 17 Aug 2026

Preview

The whole resource, exactly as a class sees it. Answers and marking are held back.

1CP2-CT-4 checkpoint

This checkpoint assesses formatting, rectangular two-dimensional structures, traversal, validation and linear search. It introduces no new syntax or principles content.

Fill in the blanks4 marks
The method gap 1 formats output. Two-dimensional access uses a gap 2 index then a field index. A gap 3 loop can repeat invalid input. A gap 4 search checks items one at a time.
  • format
  • linear
  • record
  • row
  • while
Multiple choice1 mark

Which descriptor displays 6.2 as 6.20 right aligned in width 8?

  • A`{:<8s}`
  • B`{:>8.2f}`
  • C`{:^2d}`
  • D`{:8.20}`
Written answer3 marks

For rows = [["A", 4], ["B", 7], ["C", 2]], give the expression that reads 7 and explain both indexes.

State row then field.

Students type their answer here.

Validation application

A club code must contain exactly two letters followed by three digits and must not be empty. A complete answer identifies suitable checks and explains how repeated prompting works.

Written answer3 marks

Describe how a program could validate the club code, including the checks and control structure required.

Use presence, length, simple pattern functions and repetition.

Students type their answer here.

Multiple choice1 mark

A target is absent from a list of six items. How many comparisons does a complete linear search make?

  • A0
  • B1
  • C5
  • D6

Integrated programming task

Write a function find_product(records, target_code) that linearly searches field 0 of rectangular records. Return the matching row or an empty list. Call it for P12, store the result in match, and print "{:<8} {:>4d}".format(match[1], match[2]).

The data is supplied in the starter.

Coding task5 marks
products = [["P10", "Pen", 12], ["P11", "Pad", 7], ["P12", "File", 9]]
# Define find_product, call it for P12, format and print the result.
Written answer2 marks

A record search uses records[0][index] while moving index from 0 upward. Explain the error and correct the expression for searching field 0 across rows.

Identify which index should vary.

Students type their answer here.

Multiple choice1 mark

Which statement shows appropriate decomposition of a record search?

  • APut every responsibility in one unexplained expression.
  • BSeparate target input, row traversal, key comparison and outcome handling.
  • CCompare every field even when only ID identifies a record.
  • DRemove the not-found outcome.

Route forward

This checkpoint closes 1CP2-CT-4. File input/output and programmed authentication are deliberately reserved for the next CT series.