$2\mathrm{.}1$ String basics

Strings and string literals

A string is a sequence of characters, like the text MARY, that can be stored in a variable. A string literal is a string value specified in the source code of a program. A programmer creates a string literal by surrounding text with single or double quotes, such as 'MARY' or "MARY".

The string type is a special construct known as a sequence type: A type that specifies a collection of objects ordered from left to right. A string's characters are ordered from the string's first letter to the last. A character's position in a string is called the character's index, which starts at $0.$ Ex: In "Trish", T is at index $0,$ r at $1,$ etc.

participation activity

$2\mathrm{.}1\mathrm{.}1$: String indexing.

Type a string below to see how a string is a sequence of characters ordered by position. The numbers on top indicate each character's index.

Type a string

$($up to $6$ characters$)$

Trish

$012345$

T r i s h