Reading a text file

[stiletto@ryuji.net]

Hello All!

How can I read text file?  Following program is supposed to read a text 
file and print out the contents of the file, but I got following error 
messages.

Thanks in advance

test.adb:13:01: "Read" is not visible
test.adb:13:01: non-visible (private) declaration at a-textio.ads:348
test.adb:13:01: non-visible declaration at a-stream.ads:58
gnatmake: "test.adb" compilation error


with Ada.Text_IO;
use Ada.Text_IO;

procedure test is
Data_File : File_Type;
Result_File : File_Type;
St : String(1..100);
begin

Open(Data_File, In_File, "infile");

while not End_Of_File(Data_File) loop
  Read(Data_File, St);
  Put_Line(St);
end loop;

end test;