Strings.doc - Strings In C language Strings are defined as...

Strings

In C language Strings are defined as an array of characters or a
pointer to a portion of memory containing ASCII characters. A
string in C is a sequence of zero or more characters followed by a
NULL '\0' character:

It is important to preserve the NULL terminating character as it is
how C defines and manages variable length strings. All the C
standard library functions require this for successful operation.

All the string handling functions are prototyped in: string.h or
stdio.h standard header file. So while using any string related
function, don't forget to include either stdio.h or string.h. May be
your compiler differs so please check before going ahead.

If you were to have an array of characters WITHOUT the null
character as the last element, you'd have an ordinary character
array, rather than a string constant.

String constants have double quote marks around them, and can
be assigned to char pointers as shown below. Alternatively, you