Learning objective
String-handling operations in a programming language: Be familiar with and be able to use: • length • position • substring • concatenation • character → character code • character code → character • string conversion operations. Expected string conversion operations: • string to integer • string to float • integer to string • float to string • date/time to string • string to date/time.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Programming
Subtopic
String-handling operations in a programming language
Aqa A Level Computer ScienceFundamentals of programming
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Quick explanation
String-handling operations in a programming language: Be familiar with and be able to use: • length • position • substring • concatenation • character → character code • character code → character • string conversion operations. Expected string conversion operations: • string to integer • string to float • integer to string • float to string • date/time to string • string to date/time
- This point belongs to Programming, especially String-handling operations in a programming language.
- You need to be able to string-handling operations in a programming language: Be familiar with and be able to use: • length • position • substring • concatenation • character → character code • character code → character • string conversion operations. Expected string conversion operations: • string to integer • string to float • integer to string • float to string • date/time to string • string to date/time.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Why it matters
This objective helps connect String-handling operations in a programming language to exam-style questions, flashcards, and revision notes for Programming.
Quick student answer
In Python 3, what is the value of len("computer")?
Direct answer
8
Key terms
- Substring: A sequence of consecutive characters extracted from a string.
- Character code: A numeric code associated with a character, which can be converted to or from the character.
Common trap
Concatenating a number without converting it: Convert the integer to a string first, for example "Score: " + str(score).
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Related learning objectives
- Data types: Understand the concept of a data type. Understand and use the following appropriately: • integer • real/float • Boolean • character • string • date/time • pointer/reference • records (or equivalent) • arrays (or equivalent). Variables declared as a pointer or reference data type are used as stores for memory addresses of objects created at runtime, ie dynamically. Not all languages support explicit pointer types, but students should have an opportunity to understand this data type. Define and use user-defined data types based on language-defined (built-in) data types.
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Arithmetic operations in a programming language
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