1--
2-- Copyright (C) 1998
3-- All Rights Reserved. Salih Yurttas, ZCubes, BitsOfCode Software Systems, Inc..
4--
5-- Permission to use, copy, modify, and distribute this
6-- software and its documentation for EDUCATIONAL purposes
7-- and without fee is hereby granted provided that this
8-- copyright notice appears in all copies.
9--
10--
11
12-- date : January 1, 1998.
13-- author : Salih Yurttas.
14
15-- purpose : Error handling by exceptions.
16
17-- error_handling_01.adb
18
19
20with Text_IO; use Text_IO;
21
22procedure Error_Handling_01 is
23
24 package Int_IO is new Integer_IO(Integer); use Int_IO;
25
26 N : Integer := 4;
27
28 D : Integer := 256;
29
30 Value : Integer;
31
32 E : exception;
33
34begin
35
36 for I in 1..N
37 loop
38
39 loop
40
41 begin
42
43 New_line;
44
45 Put("--> Value : ");
46 Get(Value);
47
48 if Value<0 or Value>=16 then
49 raise E;
50 end if;
51
52 D := D/Value;
53
54 Put(D);
55 New_line;
56
57 exit;
58 exception
59 when CONSTRAINT_ERROR => New_Line;
60 Put_Line("Try Again...");
61 when E => New_Line;
62 Put_Line("Try again : 0 < Value < 16 ");
63 Skip_line;
64 end;
65
66 end loop;
67
68 end loop;
69
70end Error_Handling_01;