message = ferror(fid)
message = ferror(fid,'clear')
[message, errnum] = ferror(...)
message = ferror(fid)
returns the error message message
. fid
is a file identifier associated with an open file. (See fopen
for a complete description of fid
.)
message = ferror(fid,'clear')
clears the error indicator for the specified file.
[message, errnum] = ferror(...)
returns the error status number errnum
of the most recent file I/O operation associated with the specified file.
If the most recent I/O operation performed on the specified file was successful, ferror
returns an errnum
value of 0 and the value of message
is empty.
A nonzero errnum
indicates an error occurred in the most recent file I/O operation. Two ways that you can learn more about the nature of the error are
message
is a string that may contain information about the nature of the error.stdio
.fclose
,fopen
,fprintf
,fread
,fscanf
,fseek
,ftell
,fwrite
,sprintf
,sscanf
(c) Copyright 1994 by The MathWorks, Inc.