Title here
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Values in Ada
Values
Ada has various value types including strings, integers, floats, booleans, etc. Here are a few basic examples.
with Ada.Text_IO; use Ada.Text_IO;
with Ada.Float_Text_IO; use Ada.Float_Text_IO;
procedure Main is
begin
-- Strings, which can be concatenated with "&".
Put_Line("ada" & "lang");
-- Integers and floats.
Put_Line("1+1 = " & Integer'Image(1 + 1));
Put("7.0/3.0 = ");
Put(Float(7.0 / 3.0), Fore => 1, Aft => 15, Exp => 0);
New_Line;
-- Booleans, with boolean operators as you’d expect.
Put_Line(Boolean'Image(True and False));
Put_Line(Boolean'Image(True or False));
Put_Line(Boolean'Image(not True));
end Main;To run the program, compile the code with gnatmake Main.adb and then execute it.
$ gnatmake Main.adb
$ ./main
adalang
1+1 = 2
7.0/3.0 = 2.333333333333333
FALSE
TRUE
FALSENow that we can run and build basic Ada programs, let’s learn more about the language.