Why does 'gcc -Wall' complain about void main() ?

Newsgroups	comp.lang.c
From	DFS <nospam@dfs.com>
Subject	Why does 'gcc -Wall' complain about void main() ?
Message-ID	<5fXuF.717$gt2.335@fx02.iad> (permalink)
Organization	blocknews - www.blocknews.net
Date	2019-11-01 10:22 -0400

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gcc 9.1.0 on MSYS2

combinearrays.c:14:6: warning: return type of ‘main’ is not ‘int’ [-Wmain]
    14 | void main() {
       |      ^~~~





Aside: gcc is more colorful and informative than I remember

notes in light blue
errors in red
warnings in purple
data types in green

https://imgur.com/a/xcbp2Lg

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Why does 'gcc -Wall' complain about void main() ? DFS <nospam@dfs.com> - 2019-11-01 10:22 -0400
  Re: Why does 'gcc -Wall' complain about void main() ? David Brown <david.brown@hesbynett.no> - 2019-11-01 15:45 +0100
    Re: Why does 'gcc -Wall' complain about void main() ? Manfred <noname@add.invalid> - 2019-11-01 17:57 +0100
      Re: Why does 'gcc -Wall' complain about void main() ? Keith Thompson <kst-u@mib.org> - 2019-11-01 10:31 -0700
        Re: Why does 'gcc -Wall' complain about void main() ? Manfred <noname@add.invalid> - 2019-11-01 21:00 +0100
      Re: Why does 'gcc -Wall' complain about void main() ? David Brown <david.brown@hesbynett.no> - 2019-11-01 21:20 +0100
  Re: Why does 'gcc -Wall' complain about void main() ? Keith Thompson <kst-u@mib.org> - 2019-11-01 10:25 -0700

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