ASC = ASCII code (letter → number)
CHR = CHaRacter (number → letter)
Substring(start, length) = START where, take LENGTH chars
This study notes covers Memory Trick within String Handling for GCSE Computer Science. Revise String Handling in 3.2 Programming for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 5 of 7 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for String Handling
The string variable word = "Hello". What does word.length return?
Explain the purpose of the ASC() and CHR() functions in OCR pseudocode. Give one reason a programmer might need to convert between characters and their ASCII codes.