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`!A#`! is a port of the `F33f`_`[Ada programming language`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Ada_(programming_language)]`_`f to the `F33f`_`[Microsoft .NET`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=.NET_Framework]`_`f platform. A# is freely distributed by the Department of Computer Science at the `F33f`_`[United States Air Force Academy`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=United_States_Air_Force_Academy]`_`f as a service to the Ada community under the terms of the `F33f`_`[GNU General Public License`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=GNU_General_Public_License]`_`f.

`F33f`_`[AdaCore`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=AdaCore]`_`f took over this development in 2007, and announced "`F33f`_`[GNAT`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=GNAT]`_`f for .NET", which is a fully supported .NET product with all of the features of A# and more.`:cite-ref-1[`F5bf`_`[1`#cite-note-1]`_`f] As of 2021, A# has fallen dramatically in popularity and is considered by some to be a dead language (there are no known users or implementations).`:cite-ref-2[`F5bf`_`[2`#cite-note-2]`_`f]

>>Contents

• `F0af`_`[Examples`#examples]`_`f

• `F0af`_`[Hello, world!`#hello-world]`_`f

• `F0af`_`[References`#references]`_`f

• `F0af`_`[External links`#external-links]`_`f

-─

>>Examples

>>>Hello, world!

`B100`F9d9with Ada.Text_IO;`f`b

`B100`F9d9use Ada.Text_IO;`f`b

`B100`F9d9procedure Hello_Dotnet is`f`b

`B100`F9d9begin`f`b

`B100`F9d9 Put_Line(Item => "Hello, world!");`f`b

`B100`F9d9end Hello_Dotnet;`f`b

`:cite-ref-3[`F5bf`_`[3`#cite-note-3]`_`f]

>>References

`:cite-note-1`!1.`! `F0af`_`[↑`#cite-ref-1]`_`f Cited by Martin Carlisle (USAFA) https://asharp.martincarlisle.com/ and see also http://www.adacore.com/2007/09/10/adacore-first-to-bring-true-net-integration-to-ada/ Archived 2007-10-28 at the `F33f`_`[Wayback Machine`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Wayback_Machine]`_`f

`:cite-note-2`!2.`! `F0af`_`[↑`#cite-ref-2]`_`f `:citerefdeveloper2021`aDeveloper, Website (2021-03-10). "The Mysterious Existence of A#". `*Medium`*. Retrieved 2021-06-22.

`:cite-note-3`!3.`! `F0af`_`[↑`#cite-ref-3]`_`f "A#: Multilanguage Programming with Ada in .NET". Retrieved July 1, 2023.

>>External links

• A# for .NET

• Ada Sharp .NET Archived 2008-10-16 at the `F33f`_`[Wayback Machine`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Wayback_Machine]`_`f Programming environment

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