How Do Escape Characters Work in C String Literals?

Escape Characters in C String Literals

String literals in C often include escape character sequences () to represent non-literal characters, such as special symbols or unprintable characters. Understanding these rules is crucial for constructing strings correctly.

Control Characters

Escape sequences are used to represent certain control characters, including:

• a (alert, bell)
• b (backspace)
• t (horizontal tab)
• n (newline)
• v (vertical tab)
• f (form feed)
• r (carriage return)

Punctuation Characters

To escape punctuation characters, use :

• " (quotation mark)
• ’ (apostrophe)
• ? (question mark)
• (backslash)

Numeric Character References

Escape sequences can also specify characters by their numeric codes:

• (followed by up to 3 octal digits)
• x (followed by any number of hexadecimal digits)
• u (followed by 4 hexadecimal digits for Unicode BMP)
• U (followed by 8 hexadecimal digits for Unicode astral planes)

Null Character

The escape sequence

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