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2.4.4.4 Character literals

Visual Studio .NET 2003

A character literal represents a single character, and usually consists of a character in quotes, as in 'a'.

character-literal:
'   character   '
character:
single-character
simple-escape-sequence
hexadecimal-escape-sequence
unicode-escape-sequence
single-character:
Any character except ' (U+0027), \ (U+005C), and new-line-character
simple-escape-sequence: one of
\' \" \\ \0 \a \b \f \n \r \t \v
hexadecimal-escape-sequence:
\x   hex-digit   hex-digitopt   hex-digitopt   hex-digitopt

A character that follows a backslash character (\) in a character must be one of the following characters: ', ", \, 0, a, b, f, n, r, t, u, U, x, v. Otherwise, a compile-time error occurs.

A hexadecimal escape sequence represents a single Unicode character, with the value formed by the hexadecimal number following "\x".

If the value represented by a character literal is greater than U+FFFF, a compile-time error occurs.

A Unicode character escape sequence (Section 2.4.1) in a character literal must be in the range U+0000 to U+FFFF.

A simple escape sequence represents a Unicode character encoding, as described in the table below.

Escape sequence Character name Unicode encoding
\'
Single quote
0x0027
\"
Double quote
0x0022
\\
Backslash
0x005C
\0
Null
0x0000
\a
Alert
0x0007
\b
Backspace
0x0008
\f
Form feed
0x000C
\n
New line
0x000A
\r
Carriage return
0x000D
\t
Horizontal tab
0x0009
\v
Vertical tab
0x000B

The type of a character-literal is char.

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