aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Data update

Browse source
This commit is contained in:
Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
Download patch file Download diff file Expand all files Collapse all files

37
Task/ISBN13-check-digit/Ada/isbn13-check-digit.ada
View file

@ -1,37 +0,0 @@
with Ada.Text_IO;
procedure ISBN_Check is
function Is_Valid (ISBN : String) return Boolean is
Odd : Boolean := True;
Sum : Integer := 0;
Value : Integer;
begin
for I in ISBN'Range loop
if ISBN (I) in '0' .. '9' then
Value := Character'Pos (ISBN (I)) - Character'Pos ('0');
if Odd then
Sum := Sum + Value;
else
Sum := Sum + 3 * Value;
end if;
Odd := not Odd;
end if;
end loop;
return Sum mod 10 = 0;
end Is_Valid;
procedure Show (ISBN : String) is
use Ada.Text_IO;
Valid : constant Boolean := Is_Valid (ISBN);
begin
Put (ISBN); Put (" ");
Put ((if Valid then "Good" else "Bad"));
New_Line;
end Show;
begin
Show ("978-0596528126");
Show ("978-0596528120");
Show ("978-1788399081");
Show ("978-1788399083");
end ISBN_Check;