scanf ("%s", ANIMAL);

This scanf statement uses the %s format character in order
to read in a string.  A string is an array of characters, which
ends in the NULL CHARACTER ('\0').

Notice that unlike scanf statements that read in integers, floats,
or single characters, when a scanf statement reads in a string,
the Address Operator (&) is NOT used!

Since the array was declared to have a size of 6, and room is
needed for the NULL CHARACTER, the string read in should be
no greater than 5 characters long.

In this example, the word WOLF was entered as input for the
scanf statement.  The compiler assigns these characters into
to array, and puts a NULL CHARACTER at the end.

There is an empty box at the end of the array, since the size
of the array is greater than necessary in this example.