FREAD(3) BSD Library Functions Manual FREAD(3)NAME
fread, fwrite -- binary stream input/output
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
size_t
fread(void * restrict ptr, size_t size, size_t nmemb, FILE * restrict stream);
size_t
fwrite(const void * restrict ptr, size_t size, size_t nmemb, FILE * restrict stream);
DESCRIPTION
The function fread() reads nmemb objects, each size bytes long, from the stream pointed to by stream, storing them at the location given by
ptr.
The function fwrite() writes nmemb objects, each size bytes long, to the stream pointed to by stream, obtaining them from the location given
by ptr.
RETURN VALUES
The functions fread() and fwrite() advance the file position indicator for the stream by the number of bytes read or written. They return
the number of objects read or written. If an error occurs, or the end-of-file is reached, the return value is a short object count (or
zero).
The function fread() does not distinguish between end-of-file and error, and callers must use feof(3) and ferror(3) to determine which
occurred. The function fwrite() returns a value less than nmemb only if a write error has occurred.
SEE ALSO read(2), write(2)STANDARDS
The functions fread() and fwrite() conform to ISO/IEC 9899:1990 (``ISO C90'').
BSD March 8, 1994 BSD
Check Out this Related Man Page
FREAD(3) BSD Library Functions Manual FREAD(3)NAME
fread, fwrite -- binary stream input/output
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
size_t
fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream);
size_t
fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream);
DESCRIPTION
The function fread() reads nitems objects, each size bytes long, from the stream pointed to by stream, storing them at the location given by
ptr.
The function fwrite() writes nitems objects, each size bytes long, to the stream pointed to by stream, obtaining them from the location given
by ptr.
RETURN VALUES
The functions fread() and fwrite() advance the file position indicator for the stream by the number of bytes read or written. They return
the number of objects read or written. If an error occurs, or the end-of-file is reached, the return value is a short object count (or
zero).
The function fread() does not distinguish between end-of-file and error; callers must use feof(3) and ferror(3) to determine which occurred.
The function fwrite() returns a value less than nitems only if a write error has occurred.
SEE ALSO read(2), write(2)STANDARDS
The functions fread() and fwrite() conform to ISO/IEC 9899:1990 (``ISO C90'').
BSD March 8, 1994 BSD
Hi...
I am trying to read a binary data that have different types of messages of different lengths. I am using fread() but this functions needs the size and count to read the buffer from the file. I think this may cause that the buffer overlaps other messages.
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Hi mates,
I am a new comer of this forums.
I have a problem while using function "fread(buffer, size, number, file-pointer)" to read a binary file.
While I used the "fread()" to read the binary file under Solaris UNIX System, it worked very well. But it gets a incorrect result... (6 Replies)
Hi ,
I am running a C/C++ program on a solaris 5.8 machine. This parituclar application has a module which saves data to a file. The module uses fwrite() function to save data.
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hi everybody!
i need to read a specific line from a text file using C. can any one suggest how to do it.
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Hi
I have an fwrite function in my C++ application. It is able to create the files in HP-UX.
cross is one structure
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fwrite_return = fwrite( &cross.rec2,
sizeof(cross.rec2),
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Hi,
my code is written in proC and it is in UNIX(AIX).I have written a small code for writing data into a binary file,but while writing my program is giving core dump.
Here Is my code----
fpWriteFile = fopen(WriteFileName,"wb+");
CHAR *recvgen;
recvgen = (char... (7 Replies)
When fread is used twice, the second time it seems to overwrite the first time's output. Is there any way to clear fread's internal buffer after each use ?
char *FILEREAD(const char *FILENAME)
{
static char READBUFFER = "";
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Hello, ladies, gentlemen.
First I suppose I should introduce myself.
I've been poking at C since a long time ago, somewhere around 1990. (Don't misinterpret that. "Poking at C", in this statement, means that I jumped on it, studied it for anything from a day to a weekend to a finished "Hello,... (21 Replies)
hi guys.
can we use fread and fwrite with pipes to write data more than PIPE_BUF atomically since they lock FILE object until I/O operation finish? (1 Reply)
The fwrite function call is not returning error, when the file it writes to is removed, please advise on how to find if the file already opened and being written by a program is removed manually or by some other process.
please see the code below,
#include<stdio.h>
#include<stdlib.h>
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Hello,
I am trying to read a text file into linked list, but always got the first and last records wrong.
1) The problem looks related to the initialization of the node temp with malloc(), but could not figure it out. No error/warning at compiling, though.
2) The output file is empty,... (10 Replies)