-- Demonstrates causing and handling a storage error (caused by infinite recursion)
-- Demonstrates the exceptions package
-- Program terminates when exception occurs
-- Begin-exception-end is similar to a java try-catch
with ada.text_io; use ada.text_io; 
with ada.integer_text_io; use ada.integer_text_io; 
with ada.exceptions; use ada.exceptions; 
 
procedure excep1b  is 
    -- Force a storage_error with infinite recursion
    procedure recur is 
    begin  -- No base case!
        recur; 
    end recur;

    n: Natural;
begin
    get(n);
    put_line(n'img);
    recur;  -- Cause infinite recursion
    put_line(n'img);
exception
    when data_error => 
        put_line("You must enter a number!");
    when constraint_error => 
        put_line("You must enter an non-negative value!");
    when end_error => 
        put_line("Premature end of file!");
    when e: others => 
        put_line("Unknown exception occurred!");
        put_line("An exception with this name happened: " & exception_name(e) );
        put_line("The exception message with this: " & exception_message(e) );

end excep1b;
-- Input: 3
-- Output: 
--| 3
--|Unknown exception occurred!
--|An exception with this name happened: STORAGE_ERROR
--|The exception message with this: excep1b.adb:12 infinite recursion