The EOF in C/Linux is
control^d
on your keyboard; that is, you hold down the control key and hit d. The ascii value for EOF (CTRL-D) is 0x05 as shown in this ascii table . Typically a text file will have text and a bunch of whitespaces (e.g., blanks, tabs, spaces, newline characters) and terminate with an EOF.
How can you tell if a character is EOF?
Fgetc() function returns a value of int type. Namely, it can return a number from 0 to 255 or -1 (EOF). The values read are placed into a variable of char type. Because of this, a symbol with the 0xFF (255) value turns into -1, and then is handled in the same way as the end of file (EOF).
What is EOF value in C?
EOF instead is a negative integer constant that indicates the end of a stream; often it’s
-1
, but the standard doesn’t say anything about its actual value. C & C++ differ in the type of NULL and ‘
