One or more characters surrounded by double quotes,
as in ``"xyz"''.
Initialized with the characters contained in the double quotes.
Have
static
storage duration and
type ``array of characters.''
The escape sequences described in ``Character Constants''
may also be used in string literals.
A double quote within the string
must be escaped with a backslash.
New-line characters are not valid within a string.
Adjacent string literals are concatenated
into a single string.
A null character,
\0,
is appended to the result of
the concatenation, if any.
String literals are also known as ``string constants.''