#93 – Escape Sequences in Character Literals
September 18, 2010 2 Comments
Just as we can include escape sequences in string literals, we can also use escape sequences in character literals to indicate special or non-printable characters.
The list of allowed escape sequences for character literals in C# is the same as for string literals, with the exception of the 8-byte Unicode literal for surrogate pairs:
- \a – Bell (alert)
- \b – Backspace
- \f – Formfeed
- \n – New line
- \r – Carriage return
- \t – Horizontal tab
- \v – Vertical tab
- \’ – Single quote
- \” – Double quote
- \\ – Backslash
- (backslash followed by 0) – Null
- \xhh – ASCII character in hex
- \xhhhh – Unicode character in hex
- \uhhhh – Unicode character (4-byte)
Here are some examples in code:
char c4 = '\n'; // Newline char c5 = '\r'; // Carriage return char c6 = '\t'; // Tab char c8 = '\''; // Single quote char c9 = '\"'; // Double quote char c10 = '\\'; // Backslash char c11 = '\0'; // Null char c12 = '\x2E'; // hex char c13 = '\xe213'; // hex
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The character literal for null, , is not appearing on the rendered page.
really poor choice of variable names; the trailing comment should be the variable name; imaging running across “c4” in the code!!!