Opening files
This topic describes
how to open I/O files. You can open files using the Standard C fopen()
and freopen()
library
functions. Alternatively, if you want to use the C++ I/O stream
classes, you can use the constructors for the ifstream
, ofstream
or fstream
classes,
or the open()
member functions of the filebuf
, ifstream
, ofstream
or fstream
classes.
To open a file stream with a previously opened z/OS® UNIX file
descriptor, use the fdopen()
function.
To open files with UNIX file system low-level I/O,
use the open()
function. For more information about opening files
in UNIX file system, see Performing z/OS UNIX file system I/O operations.