Streams and files

Streams and files

[Sim Con]

Hello! I'd like to write in a file a record and print that file taking
the data's in the record form. I see that these things can be done in
ada using streams but i can't find on the net a good source for learn
how to use it. One problem i have is this:

Ada.Streams.Stream_Io.create(file,out_file,"db.txt");
Stream:=Ada.Streams.Stream_Io.Stream(File);
while not Ada.Streams.Stream_Io.end_of_file(file) loop
....

i receive a mode_error when it process the while line , any help? Thanx
in advance ^_^


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Re: Streams and files

[Grein, Christoph]

> Ada.Streams.Stream_Io.create(file,out_file,"db.txt");
> Stream:=Ada.Streams.Stream_Io.Stream(File);
> while not Ada.Streams.Stream_Io.end_of_file(file) loop

End_of_File is valid for an in_file only.

Re: Streams and files

[Sim Con]

little add-on question: can i open a file in out_mode and then use the
while end_of_file loop on that ? thanx!!


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Re: Streams and files

[Eric G. Miller]

In <49b752211ac11632e3f829848b2e826c.110780@mygate.mailgate.org>, Sim Con wrote:

> little add-on question: can i open a file in out_mode and then use the
> while end_of_file loop on that ? thanx!!

Ask yourself, "When would the End_Of_File condition be true on a file
opened for writing?"