The C structure describing the header is shown below :

typedef struct

$\{$

int magic; $/*$ This must have the value $0$x$63746172.*/$

int eop; $/*$ End of file pointer. $*/$

int block$\_$count; $/*$ Number of entries in the block which are in$-$use. $*/$

int file$\_$size$[4]$; $/*$ File size in bytes for files $1.\mathrm{.}4*/$

char deleted$[4]$; $/*$ Contains binary one at position i if i$-$th entry was deleted. $*/$

int file$\_$name$[4]$; $/*$ pointer to the name of the file. $*/$

int next; $/*$ pointer to the next header block. $*/$

$\}$ hdr;

There is no maximum file size. File name length will not exceed what can be stored in a short. For the

size of the header, do not assume a constant value; use sizeof$()$ instead