ferror

Display the error status of fileID.

Syntax

R = ferror(fileID)

Inputs

fileID: File ID returned from earlier call to fopen().; Type: double | integer

Outputs

R: An error message describing the problem encountered.; Type: string

Example

% read file using 'w' causes error
fopen_fileID = fopen('testfile', 'w')
[fgets_text, fgets_len] = fgetl(fopen_fileID)
R = ferror(fopen_fileID)
fclose(fopen_fileID)

fopen_fileID = 4
fgets_text = -1
fgets_len = 0
R = Broken pipe
ans = 0