Function            strrep - replicate a char

  Syntax              char *strrep(char c, int len);

  Prototype in        stringhk.h

  Remarks             strrep creates a string len long entirely of
                      character c.

  Return value        returns a pointer to the storage location
                      containing the newly replicated string, or NULL if
                      space could not be allocated.

  Example             #include <stringhk.h>
                      #include <stdio.h>            /* for the printf */

                      main()
                      {
                           char *rep;

                           printf("%s\n",rep = strrep('k',7));
                      }

  Program output      kkkkkkk