_fmode
Determines default file-translation mode.
Defined in header <fcntl.h>
Syntax
extern int _fmode;Remarks
_fmode determines in which mode (text or binary) files vv^ill be opened and translated. The value of _fmode is O_TEXT by default, which specifies that
| files will be read in text mode. If _fmode is set to 0_B1NARY, | the files are |
| opened and read in binary mode. (O_TEXT and O_BINARY | are defined in |
fcntLh.)
In text mode, on input carriage-return/linefeed (CR/LF) combinations are translated to a single linefeed character (LF). On output, the reverse is true: LF characters are translated to CR/LF combinations.
In binary mode, no such translation occurs.
You can override the default mode as set by _fmode by specifying a t (for text mode) or h (for binary mode) in the argument type in the library routines fopen, fdopen, and freopen. Also, in the routine open, the
| argument access can include either O_BINARY | or O_TEXT, which will |
explicitly define the file being opened (given by the open pathname argument) to be in either binary or text mode.
Differences from modern implementations
Nothing recorded yet.
Modern references
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Extraction notes
- heading `fmode` read as `_fmode`
Stable link: /3.1/fcntl.h/_fmode/
· short form /3.1/_fmode/