ferror

Test for i/o read/write errors.

Syntax

• msg = ferror(fid)
• [msg, code] = ferror(fid)
• ferror(fid, 'clear')

Input argument

• fid - a file descriptor

Output argument

• code - an integer value: 0 if no error. negative value if an error is detected.
• msg - an character vector: error message equivalent to error code.

Description

ferror inquires about file error status.

ferror(fid, 'clear') clears the error indicator for the specified file.

For more help about returned message, consult C run-time library manual for further details.

Example

filename = [tempdir(), 'test_ferror.csv'];
fid = fopen(filename, 'w');
res = fgets(fid);
[msg, code] = ferror(fid)

See also

fopen.

History

Author

Allan CORNET