#### 16.2.18 End of File and Errors

— Built-in Function: feof (fid)

> Return 1 if an end-of-file condition has been encountered for a given file and 0 otherwise. Note that it will only return 1 if the end of the file has already been encountered, not if the next read operation will result in an end-of-file condition.

— Built-in Function: ferror (fid)

> Return 1 if an error condition has been encountered for a given file and 0 otherwise. Note that it will only return 1 if an error has already been encountered, not if the next operation will result in an error condition.

— Built-in Function: freport ()

> Print a list of which files have been opened, and whether they are open for reading, writing, or both. For example,

>               freport ()

>                    -|  number  mode  name
>                    -|
>                    -|       0     r  stdin
>                    -|       1     w  stdout
>                    -|       2     w  stderr
>                    -|       3     r  myfile