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Object-Oriented Programming With ANSI-C这本书中的源代码!找了很久

% -r			// implement -r option

#  ifndef  `class _r `n
#  define  `class _r `n `n

#  include  " `super .r" `n `n

`{prot
  `{if `class `
    `line `n
  `} `{else `n
    struct  `class  {  const  struct  `super  _; `n
      `{struct `class
`t	`const `type  `name ; `n
      `}
    }; `n `n

    `{if `newmeta 1

      struct  `meta  {  const  struct  `supermeta  _; `n
        `{%- `t `%link `n `}
      }; `n `n

      `{%- `%super-header ; `n `}n

    `}fi
  `}fi
`}n

#  endif `n