Data Types
Computer Science: OCR A Level, topic 4.1.1
Data Types
Every piece of data that is stored has a type. The type determines how it is stored and what you can do with the data.
Integer
- Whole numbers.
- Examples:
- 12, 0, -142.
Float / Real
- Fractional numbers.
- Examples:
- 0.42, 1.00.
String
- Text data.
- Example:
- "Hello, world!".
Character
- A single letter of text data.
- Example:
- 'a'.
Boolean
- A True or False value.
- Examples:
- True.
- False.
Test yourself on Data Types
What would be the most suitable type to store the number 2.5?
Which of these data are characters?
Which would be the most appropriate type to store a username?