OCR Exam Reference Language IDE: String Handling

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OCR String Handling Commands

Concept	Keyword(s)/Symbols	Example
String length	`.length`	`subject = "ComputerScience"` `print(subject.length)` `// gives 15`
Substrings	`.substring(x, i)`, `.left(i)`, `.right(i)`	`subject.substring(3,5)` `// returns "puter"` `subject.left(4)` `// returns "Comp"` `subject.right(3)` `// returns "nce"`
Concatenation	`+`	`print("Hello, " + name)` `print(firstName + " " + surname)`
Uppercase / Lowercase	`.upper`, `.lower`	`print(subject.upper)` `print(subject.lower)`
ASCII conversion	`ASC(...)`, `CHR(...)`	`print(ASC("A"))` `// returns 65` `print(CHR(97))` `// returns "a"`

Useful Support	Syntax	Why it helps
Input / Output	`input(...)`, `print(...)`	Take in a string, then display the part or version you need.
Assignment	`=`	Store the string before applying operations, for example `word = "Algorithm"`.
Variables	`name`, `word`, `message`	Use clear variable names so each string operation is easy to follow.

String Tips	Remember	Check
Substring indexing	`x` is the starting index and OCR uses 0-based indexing.	`"ComputerScience".substring(3,5)` starts at the fourth character.
Methods do not change the original	Store the result if you want to reuse it later.	`upperName = name.upper` keeps the converted version.
ASCII works with single characters	`ASC` converts a character to a number and `CHR` converts a number to a character.	`ASC("A")` is valid, but `ASC("AB")` is not.