C String Literals
A "string literal" is a sequence of characters from the source character set enclosed in double quotation marks (" "). String literals are used to represent a sequence of characters which, taken together, form a null-terminated string. You must always prefix wide-string literals with the letter L.
" s-char-sequenceopt "
L" s-char-sequenceopt "
any member of the source character set except the double quotation mark ("), backslash (\), or newline character
The example below is a simple string literal:
char *amessage = "This is a string literal.";
All escape codes listed in the Escape Sequences table are valid in string literals. To represent a double quotation mark in a string literal, use the escape sequence \". The single quotation mark (') can be represented without an escape sequence. The backslash (\) must be followed with a second backslash (\\) when it appears within a string. When a backslash appears at the end of a line, it is always interpreted as a line-continuation character.