How to recognize this character "\" in C#

Question

I just want to write in Console this "\".

Console.Write("\");

But it doesn't recognize it like a string or character ,but as a command.

No, it recognizes it as an escape character. Either use `Console.Write("\\")` or `Console.Write(@"\")`. This is just a matter of string literals. — Jon Skeet, Feb 27 '17 at 18:04
It's the one that goes from upper left to lower right. Can't miss it. — 15ee8f99-57ff-4f92-890c-b56153, Feb 27 '17 at 18:05
If there is nothing in your string to escape (ie. you want the literal value inside the double quotes) then prefix it with `@`. Example: `Console.Write(@"\");` — Igor, Feb 27 '17 at 18:07

score 3 · Accepted Answer · answered Feb 27 '17 at 18:07

\ is used as an escape character inside strings. In order to output the \ itself you need to escape it by doubling it up, or use a string literal by prefixing your string with @.

Either of these will work.

Console.WriteLine("\\");

Console.WriteLine(@"\");

tRuEsAtM · Answer 2 · 2017-03-16T00:10:49.387

2

'\' is an escape character. Use Console.WriteLine("\\") to get the desired output. You can also use @ like Console.WriteLine(@"Your_Content") and the content will be automatically escaped.

edited Mar 16 '17 at 00:10

answered Feb 27 '17 at 18:07

tRuEsAtM

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score 1 · Answer 3 · edited May 23 '17 at 12:09

It's a escape character, use Console.Write("\\"). These are used in escape sequences, here is a list of them:

\a → Bell (alert)
\b → Backspace
\f → Formfeed
\n → New line
\r → Carriage return
\t → Horizontal tab
\v → Vertical tab
\' → Single quotation mark
\" → Double quotation mark
\\ → Backslash (You have to use this one)
\? → Literal question mark
\ ooo → ASCII character in octal notation
\x hh → ASCII character in hexadecimal notation
\x hhhh → Unicode character in hexadecimal notation if this escape sequence is used in a wide-character constant or a Unicode string literal.
\uxxxx → Unicode escape sequence for character with hex value xxxx
\xn[n][n][n]→ Unicode escape sequence for character with hex value nnnn (variable length version of \uxxxx)
\Uxxxxxxxx → Unicode escape sequence for character with hex value xxxxxxxx (for generating surrogates)

You can also use Console.WriteLine(@"\");, see this for an expanation.

How to recognize this character "\" in C#

3 Answers3