Relationship between EOF and feof () Functions

In the C language, or more accurately, the end of file is represented in the C standard library ). In the while LOOP, EOF is used as the end mark of the file, which must be a text file. In text files, data is stored in the form of ASCII code values of characters. We know that the ASCII code value ranges from 0 ~ 255.-1 is not possible, so EOF can be used as the end mark of the file.

In C language, when data is stored in a binary file, the value-1 is displayed. In this case, EOF cannot be used as the end mark of the binary file. To solve this problem, ansi c provides a feof function to determine whether the file ends. If a file ends, the value of the feof (fp) function is 1. Otherwise, the 0. feof function can be used to determine whether the binary file ends or whether the text file ends.


From the column of ainemo