This study notes covers GCSE String Operations 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 3 of 7 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
GCSE String Operations
| Operation | Pseudocode | Example | Result |
|---|---|---|---|
| Length | string.length | "Hello".length | 5 |
| Substring | string.substring(start, length) | "Hello".substring(0, 2) | "He" |
| Uppercase | string.upper | "Hello".upper | "HELLO" |
| Lowercase | string.lower | "Hello".lower | "hello" |
| Concatenation | string1 + string2 | "Hi" + " " + "there" | "Hi there" |
| ASCII conversion | ASC(char), CHR(code) | ASC("A"), CHR(65) | 65, "A" |
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.
Quick recall flashcards
How do you join strings?
Concatenation: string1 + string2
What does CHR(66) return?
"B"