преобразовать форматированный ввод (convert formatted input)
Ошибки (Error)
For the conditions under which the fscanf() functions fail and
may fail, refer to fgetc(3p) or fgetwc(3p).
In addition, the fscanf() function shall fail if:
EILSEQ Input byte sequence does not form a valid character.
ENOMEM Insufficient storage space is available.
In addition, the fscanf() function may fail if:
EINVAL There are insufficient arguments.
The following sections are informative.
