Description |
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You can type special characters in a character string literal
using the escape sequence notation described previously in the section
on character constants. The double quote character (")
must be represented as an escape sequence if it is to appear inside
a string literal. Represent the string 'he said "hi"'
with
A character string has static storage duration and type array
of char.
The actual characters stored in a character string literal
are the exact characters specified. In addition, a null character
(\0) is automatically added to the end of each character
string literal by the compiler. Note that the null character is
added only to string literals. Arrays of characters are not terminated
with the extra character.
Character string literals that have no characters consist
of a single null character.
Note that a string literal containing one character is not
the same as a character constant. The string literal "A"
is stored in two adjacent bytes with the A
in the first byte and a null character in the second byte; however,
the character constant "A"
is a constant with type int and the value 65 (the ASCII code value
for the letter A).
ANSI C allows the usage of wide string literals. A wide string
literal is a sequence of zero or more multibyte characters enclosed
in double-quotes and prefixed by the letter L.
A wide string literal has static storage duration and type "array
of wchar_t."
It is initialized with the wide characters corresponding to the
given multibyte characters.
Example
Character string literals that are adjacent tokens are concatenated
into a single character string literal. A null character is then
appended. Similarly, adjacent wide string literal tokens are concatenated
into a single wide string literal to which a code with value zero
is then appended. It is illegal for a character string literal token
to be adjacent to a wide string literal token.
Example
char *string = "abc" "def"; |
