Ada (programming language)

programming language

Ada is a computer programming language. It was invented by Jean Ichbiah during the 1980s.[1] It is very similar to the programming language Pascal. Ada offers various features to make a program as safe as possible. That is why it is often used in systems where an error can be very dangerous. Ada is an international standard.

Green logo on horizon with Ada letters and slogan
Designed by
First appeared1980
Typing disciplinestatic, strong, safe, nominative
Filename extensions.adb .ads
Major implementations
AdaCore GNAT, Green Hills Software Optimising Ada 95 Compiler, PTC, Inc. PTC ApexAda and PTC ObjectAda, DDC-I Score
SPARK, Ravenscar profile
Influenced by
ALGOL 68, Pascal, C++ (Ada 95), Smalltalk (Ada 95), Java (Ada 2005), Eiffel (Ada 2012)
C++, Chapel, Eiffel, Java, Nim, PL/SQL, PL/pgSQL, Ruby, Rust, Seed7, SQL/PSM, VHDL

Hello world in Ada


Example of a Hello world program in Ada:

with Ada.Text_IO;

procedure Hello is
    -- output of Text "Hello, world!".
    Ada.Text_IO.Put_Line("Hello, world!");
end Hello;

Ada is a reference to the mathematician Ada Lovelace, well known for her work with Charles Babbage on the first computer, The Analytical Engine, and her short book 'Flyology'.


  1. "The Ada Programming Language". The Ada Programming Language. Retrieved February 12, 2016.