The error-status flags store the information on the status of a file that is being currently used. The current state of the I/O system is held in an integer, in which the following flags are encoded:
| Name |
Meaning |
| eofbit |
1 when end-of-file is encountered, 0 otherwise. |
| failbit |
1 when non-fatal I/O error has occurred, 0 otherwise. |
| badbit |
1 when fatal I/O error has occurred, 0 otherwise. |
| goodbit |
0 value |
