const char *p    -   This is a pointer to a constant char. One cannot change the value 
                     pointed at by p, but can change the pointer p itself.

                     *p = 'A' is illegal.
                      p  = "Hello" is legal.

                     Note that even char const *p is the same!

		    const * char p   -   This is a constant pointer to (non-const) char. One cannot change 
                    the pointer p, but can change the value pointed at by p.

                    *p = 'A' is legal.
                    p  = "Hello" is illegal.
														    


    const char * const p  -   This is a constant pointer to constant char! One cannot 
   change the value pointed to by p nor the pointer.

        *p = 'A' is illegal.
																								                          p  = "Hello" is also illegal.