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C
input and output
libio
is distributed with a complete implementation of the ANSI C stdio
facility. It is implemented using streambuf objects. See Wrappers
for C stdio.
The stdio
package is intended as a replacement for whatever stdio
is in your C library. Since stdio
works best when you build libc
to contain it, and, since that may be inconvenient, it is not installed
by default.
Extensions beyond ANSI :
-
A stdio
FILE is identical to
a streambuf.
Hence there is no need to worry about synchronizing C and C++ input/output—they
are by definition always synchronized.
-
If you create a new streambuf
sub-class (in C++), you can use it as a file
from C. Thus the system is extensible using the standard streambuf
protocol.
-
You can arbitrarily mix reading
and writing, without having to seek in between.
-
Unbounded ungetc
() buffer.
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