C programming

You will be writing a C program that reads in four characters 

and then prints them out in a rotated pattern.  For example, if

the input characters are ABCD, the output will be (with no leading spaces):

               ABCD

               BCDA

               CDAB

               DABC

You need to write a function RotateFourChars using pointers and a "temp" variable to 

store c1 (the first character) in order to rotate the characters.