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

Version	📄 Description
1.0.0	initial version