Feof () and EOF usage

An ASCII file is also called a text file. It stores one character in a byte storage unit (the ASCII code of the character is stored in the external storage, and each character occupies one byte ).

Binary files store data in the memory in the original format on the disk.

Because its external storage format is the same as the memory representation format, each character's ASCII code is also stored in the external storage.

However, EOF can only be used for text files. In fact, it is not very accurate. You need to check the type of the defined variable.