what is eof in c

EOF stands for "End of File" and is used in C programming to indicate the end of input. When the end of a file is reached, the getc() function returns EOF. The feof() function is used to check whether the file pointer to a stream is pointing to the end of the file or not. It returns a non-zero value if the end is reached, otherwise, it returns 0. In C, EOF is defined as a macro that represents an integer value that is returned by a number of narrow stream functions to indicate an end-of-file condition, or some other error situation. When reading input from the user, pressing CTRL+Z on Windows or CTRL+D on Unix/Linux is used to indicate the end of input.