Indent and Format C Program Source(indent manual)

This is Edition 2.2.10 of `The `indent' Manual', for Indent Version
2.2.10, last updated 23 July 2008.
Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996 Free Software
Foundation, Inc. Copyright (C) 1995, 1996 Joseph Arceneaux. Copyright
(C) 1999 Carlo Wood. Copyright (C) 2001 David Ingamells.
Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.
`indent': Indent and Format C Program Source
*********************************************
The `indent' program changes the appearance of a C program by inserting
or deleting whitespace.
This is Edition 2.2.10, 23 July 2008, of `The `indent' Manual', for
Indent Version 2.2.10.
1 The `indent' Program
**********************
The `indent' program can be used to make code easier to read. It can
also convert from one style of writing C to another.
`indent' understands a substantial amount about the syntax of C, but it
also attempts to cope with incomplete and misformed syntax.
In version 1.2 and more recent versions, the GNU style of indenting
is the default.
1.1 Invoking `indent'
=====================
As of version 1.3, the format of the `indent' command is:
indent [OPTIONS] [INPUT-FILES]
indent [OPTIONS] [SINGLE-INPUT-FILE] [-o OUTPUT-FILE]
This format is different from earlier versions and other versions of
`indent'.
In the first form, one or more input files are specified. `indent'
makes a backup copy of each file, and the original file is replaced with
its indented version. *Note Backup files::, for an explanation of how
backups are made.
In the second form, only one input file is specified. In this case,
or when the standard input is used, you may specify an output file after
the `-o' option.
To cause `indent' to write to standard output, use the `-st' option.
This is only allowed when there is only one input file, or when the
standard input