Manpages - getw.3

getw, 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)):

*getw*(), *putw*():

      Since glibc 2.3.3:
          _XOPEN_SOURCE && ! (_POSIX_C_SOURCE >= 200112L)
              || /* Glibc since 2.19: */ _DEFAULT_SOURCE
              || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
      Before glibc 2.3.3:
          _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE

*getw*() 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.

Normally, getw*() returns the word read, and *putw*() returns 0. On error, they return *EOF.

For an explanation of the terms used in this section, see *attributes*(7).

SVr4, SUSv2. Not present in POSIX.1.

The value returned on error is also a legitimate data value. *ferror*(3) can be used to distinguish between the two cases.

*ferror*(3), *fread*(3), *fwrite*(3), *getc*(3), *putc*(3)

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