GETWSection: Linux Programmer's Manual (3)
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NAMEgetw, putw - input and output of words (ints)
#include <stdio.h> int getw(FILE *stream); int putw(int w, FILE *stream);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.3.3:
_XOPEN_SOURCE && ! (_POSIX_C_SOURCE >= 200112L)
|| /* Glibc since 2.19: */ _DEFAULT_SOURCE
|| /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
- Before glibc 2.3.3:
- _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE
DESCRIPTIONgetw() reads a word (that is, an int) from stream. It's provided for compatibility with SVr4. We recommend you use fread(3) instead.
putw() writes the word w (that is, an int) to stream. It is provided for compatibility with SVr4, but we recommend you use fwrite(3) instead.
RETURN VALUENormally, getw() returns the word read, and putw() returns 0. On error, they return EOF.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
|getw(), putw()||Thread safety||MT-Safe|
CONFORMING TOSVr4, SUSv2. Not present in POSIX.1.
BUGSThe value returned on error is also a legitimate data value. ferror(3) can be used to distinguish between the two cases.
SEE ALSOferror(3), fread(3), fwrite(3), getc(3), putc(3)
COLOPHONThis page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
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