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clean up PrintRoots2.

This commit is contained in:
Kyle Isom 2019-09-24 09:40:00 -07:00
parent 306a13f866
commit b4fff86a37
1 changed files with 12 additions and 3 deletions
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13
prada2012/ch02/print_roots2.adb
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@ -1,11 +1,13 @@
-- print_roots2 demonstrates runtime exceptions. -- print_roots2 demonstrates runtime exceptions.
with Ada.Text_IO; with Ada.Text_IO;
with Ada.Float_Text_IO; with Ada.Float_Text_IO;
with Ada.Numerics;
with Ada.Numerics.Generic_Elementary_Functions; with Ada.Numerics.Generic_Elementary_Functions;
procedure Print_Roots is procedure Print_Roots2 is
use Ada.Text_IO; use Ada.Text_IO;
use Ada.Float_Text_IO; use Ada.Float_Text_IO;
use Ada.Numerics;
package Numerics is new Ada.Numerics.Generic_Elementary_Functions(Float); package Numerics is new Ada.Numerics.Generic_Elementary_Functions(Float);
use Numerics; use Numerics;
X: Float; X: Float;
@ -16,8 +18,15 @@ begin
loop loop
Get(X); Get(X);
exit when X = 0.0; exit when X = 0.0;
begin
Put("Root of "); Put(X); Put(" is "); Put("Root of "); Put(X); Put(" is ");
exception
when Ada.Numerics.Argument_Error =>
Put("not calculable: X must be >= 0");
when Constraint_Error =>
Put("not calculable: X must be >= 0");
end;
Put(Sqrt(X)); Put(Sqrt(X));
New_Line; New_Line;
end loop; end loop;
end Print_Roots; end Print_Roots2;