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<H1> A.6 Input-Output</H1>
<DIV Class="Paranum"><FONT SIZE=-2>1</FONT></DIV>
<DIV Class="Normal"> [<A NAME="I5732"></A><A NAME="I5733"></A> Input-output
is provided through language-defined packages, each of which is a child
of the root package Ada. The generic packages Sequential_IO and Direct_IO
define input-output operations applicable to files containing elements
of a given type. The generic package Storage_IO supports reading from
and writing to an in-memory buffer. Additional operations for text input-output
are supplied in the packages Text_IO and Wide_Text_IO. Heterogeneous
input-output is provided through the child packages Streams.Stream_IO
and Text_IO.Text_Streams (see also <A HREF="AA-13-13.html">13.13</A>).
The package IO_Exceptions defines the exceptions needed by the predefined
input-output packages.] </DIV>
<H4 ALIGN=CENTER>Inconsistencies With Ada 83</H4>
<DIV Class="Paranum"><FONT SIZE=-2>1.a</FONT></DIV>
<DIV Class="Annotations"><FONT SIZE=-1><A NAME="I5734"></A>The introduction
of Append_File as a new element of the enumeration type File_Mode in
Sequential_IO and Text_IO, and the introduction of several new declarations
in Text_IO, may result in name clashes in the presence of <B>use</B>
clauses. </FONT></DIV>
<H4 ALIGN=CENTER>Extensions to Ada 83</H4>
<DIV Class="Paranum"><FONT SIZE=-2>1.b</FONT></DIV>
<DIV Class="Annotations"><FONT SIZE=-1><A NAME="I5735"></A>Text_IO enhancements
(Get_Immediate, Look_Ahead, Standard_Error, Modular_IO, Decimal_IO),
Wide_Text_IO, and the stream input-output facilities are new in Ada 95.
</FONT></DIV>
<H4 ALIGN=CENTER>Wording Changes from Ada 83</H4>
<DIV Class="Paranum"><FONT SIZE=-2>1.c</FONT></DIV>
<DIV Class="Annotations"><FONT SIZE=-1>RM83-14.6, "Low Level Input-Output,"
is removed. This has no semantic effect, since the package was entirely
implementation defined, nobody actually implemented it, and if they did,
they can always provide it as a vendor-supplied package. </FONT></DIV>
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