8.2 · Lesson 1 of 4
One-dimensional arrays
Syllabus 8.2.1Syllabus 8.2.2
What this lesson covers
- Declare and use 1D and 2D arrays
- Use variables as array indexes
Key vocabulary
- Array
- A data structure that stores several items of the same data type under one identifier.
- Element
- A single item stored in an array.
- Index
- The position of an element in an array.
- Lower bound
- The first index of an array: usually 1 in Cambridge pseudocode, 0 in Python.
- Upper bound
- The last index of an array.
- DECLARE
- Sets up an array with its name, size and data type, e.g. DECLARE Ages : ARRAY[1:30] OF INTEGER.
Check your learning
- Quick check: 4 questions
- Key vocabulary test: 6 terms
- Activity 1: What's the output? · 6 questions
- Activity 2: Declaring arrays · 6 questions
- Activity 3: 1D arrays quiz · 8 questions