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Escape sequences are used to define certain special characters within string literals.

The following escape sequences are available:

Escape
sequence
Description Representation
\' single quote byte ‎0x27‎
\" double quote byte ‎0x22‎
\? question mark byte ‎0x3f‎
\\ backslash byte ‎0x5c‎
\0 null character byte ‎0x00‎
\a audible bell byte ‎0x07‎
\b backspace byte ‎0x08‎
\f form feed - new page byte ‎0x0c‎
\n line feed - new line byte ‎0x0a‎
\r carriage return byte ‎0x0d‎
\t horizontal tab byte ‎0x09‎
\v vertical tab byte ‎0x0b‎
\nnn arbitrary octal value byte ‎nnn‎
\xnn arbitrary hexadecimal value byte ‎nn‎
\unnnn arbitrary Unicode value.
May result in several characters.
code point ‎U+nnnn‎
\Unnnnnnnn arbitrary Unicode value.
May result in several characters.
code point ‎U+nnnnnnnn‎

[تعديل] Notes

The new-line character \n has special meaning when used in text mode I/O, it is converted to the OS-specific newline byte or byte sequence.

Octal escape sequences have a limit of three octal digits, but terminate at the first character that is not a valid octal digit if encountered sooner.

Hexadecimal escape sequences have no length limit and terminate at the first character that is not a valid hexadecimal digit. If the value represented by a single hexadecimal escape sequence does not fit the range of values represented by the character type used in this string literal (char, char16_t, char32_t, or wchar_t), the result is unspecified.

A universal character name in a narrow string literal may map to more than one char due to multibyte encoding.

[تعديل] Example

#include <iostream>
 
int main()
{
    std::printf("This\nis\na\ntest\n\nShe said, \"How are you?\"\n");
}

الخرج:

This
is
a
test
 
She said, "How are you?"

[تعديل] See also