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fread (3)
  • fread (3) ( Solaris man: Библиотечные вызовы )
  • fread (3) ( FreeBSD man: Библиотечные вызовы )
  • fread (3) ( Русские man: Библиотечные вызовы )
  • >> fread (3) ( Linux man: Библиотечные вызовы )
  • fread (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    fread, fwrite - binary stream input/output
     
    

    SYNOPSIS

    #include <stdio.h>
    
    size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
    
    size_t fwrite(const void *ptr, size_t size, size_t nmemb,
                  FILE *stream);
    
     

    DESCRIPTION

    The function fread() reads nmemb elements of data, each size bytes long, from the stream pointed to by stream, storing them at the location given by ptr.

    The function fwrite() writes nmemb elements of data, each size bytes long, to the stream pointed to by stream, obtaining them from the location given by ptr.

    For non-locking counterparts, see unlocked_stdio(3).  

    RETURN VALUE

    fread() and fwrite() return the number of items successfully read or written (i.e., not the number of characters). If an error occurs, or the end-of-file is reached, the return value is a short item count (or zero).

    fread() does not distinguish between end-of-file and error, and callers must use feof(3) and ferror(3) to determine which occurred.  

    CONFORMING TO

    C89, POSIX.1-2001.  

    SEE ALSO

    read(2), write(2), feof(3), ferror(3), unlocked_stdio(3)  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    CONFORMING TO
    SEE ALSO
    COLOPHON


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