Function            strfill - fill a string with a character

  Syntax              char *strfill(char *str, char c, int count);

  Prototype in        stringhk.h

  Remarks             strfill makes a string of c characters of count
                      length.

                      Similar to strrep(), strfill() uses an existing
                      piece of memory pointed to by str. Functions like
                      strnset set a piece of memory with a character, but
                      do not make it a valid C string (null terminated.)

  Return value        returns the pointer passed to strfill.

  See also            strrep()