Re: Number into String

[mfeldman@seas.gwu.edu]

In a previous article,  Robert A Duff  <bobduff@world.std.com> writes:
>"Jeong, Lae Hyung" <lovelace@dreamwiz.com> writes:
>
>> How can I convert float number into String ?
>
>Use the Float'Image attribute.
>
>- Bob

This is correct but a bit oversimplified. Float'Image returns a string
giving the Float value in "E-notation", and provides no way for the
programmer to specify other formats.

Instead, look up the details of Ada.Float_Text_IO.Put (in RM A.10). 
There are three kinds of Put: to Standard_Output, to a named file,
and to a string. This last form seems to be little known, but is very
handy, because you can use all the formatting parameters: Fore, Aft,
Exp, etc. 

There are Get-from-string and Put-to-string forms in all the various
Ada.Text_IO packages. They are very useful in parsing input and
formatting output!

Mike Feldman


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