A Sharp (.NET)

A#
A#
Designed by	Dr. Martin C. Carlisle, Lt Col Ricky Sward, Maj Jeff Humphries
Developer	AdaCore
First appeared	2004; 22 years ago
Platform	Common Language Infrastructure
OS	Cross-platform
License	GNU General Public License
Website	www.asharp.martincarlisle.com

A# is a port of the Ada programming language to the Microsoft .NET platform. A# is freely distributed by the Department of Computer Science at the United States Air Force Academy as a service to the Ada community under the terms of the GNU General Public License.^[1]

AdaCore took over this development in 2007, and announced "GNAT for .NET", which is a fully supported .NET product with all of the features of A# and more.^[2] 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).^[3]^{[unreliable source?]}^[4]

Examples

Hello, world!

with Ada.Text_IO;
use Ada.Text_IO;
procedure Hello_Dotnet is
begin
 Put_Line(Item => "Hello, world!");
end Hello_Dotnet;

^[5]

References

↑ "Ada for .NET". www.sigada.org. Retrieved 2025-12-29.
↑ 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 Wayback Machine
↑ Developer, Website (2021-03-10). "The Mysterious Existence of A#". Medium. Retrieved 2021-06-22.
↑ "AdaCore First to Bring True .NET Integration to Ada". AdaCore. 2007-09-10. Retrieved 2025-12-29.
↑ "A#: Multilanguage Programming with Ada in .NET". Retrieved July 1, 2023.^{[permanent dead link]}

External links

A# for .NET
Ada Sharp .NET Archived 2008-10-16 at the Wayback Machine Programming environment

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[1] "Ada for .NET". www.sigada.org. Retrieved 2025-12-29.

[2] 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 Wayback Machine

[3] Developer, Website (2021-03-10). "The Mysterious Existence of A#". Medium. Retrieved 2021-06-22.

[4] "AdaCore First to Bring True .NET Integration to Ada". AdaCore. 2007-09-10. Retrieved 2025-12-29.

[5] "A#: Multilanguage Programming with Ada in .NET". Retrieved July 1, 2023.^{[permanent dead link]}

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