Enter the read$-$writer pointer values at the time instants in the following program, $($a$)$ through $($j$).$ You may assume it is executed from the beginning to the end. Assume that the file, $$file$1.$txt$,$ exists and is empty. $(70$ points$)1.$ char $*$ buf$1[5]$;

buf$1[0]=$T$$;

buf$1[1]=$K$$;

buf$1[2]=$D$$;

buf$1[3]=$Y$$;

buf$1[4]=$U$$;

char $*$buf$2[3]$;

int nread, nwrite; fd $=$ open$("$file$1.$txt$",$ O$\_$RDWR$)$;

$($a$)$ nwrite $=$ write$($fd$,$ buf$1,3)$;

$($b$)$ lseek$($fd$,($offset$\_$t$)2,$ SEEK$\_$SET$)$;

$($c$)$ nwrite $=$ write$($fd$,$ buf$1,5)$;

$($d$)$ lseek$($fd$,($offset$\_$t$)-3,$ SEEK$\_$END$)$;

$($e$)$ nread $=$ read$($fd$,$ buf$2,3)$;

$($f$)$ lseek$($fd$,($offset$\_$t$)-2,$ SEEK$\_$CUR$)$;

$($g$)$ nwrite $=$ write$($fd$,$ buf$1,3)$;

$($h$)$ lseek$($fd$,($offset$\_$t$)-4,$ SEEK$\_$CUR$)$;

$($i$)$ nwrite $=$ write$($fd$,$ buf$1,2)$;

$($j$)$ What would be the contents of the file, $$file$1.$txt$,$ after the above program in problem $1$ is completed. Enter a sequence of characters $($case sensitive$).$ Do not enter any extra characters such as blank or new$-$line$($Enter$).$ HINT: You need to enter $8$ characters. $(20$ points$)$

$2.$ What would be the contents of the array, buf$2[3],$ after the above program in problem $1$ is completed. Enter a sequence of characters $($case sensitive$).$ Do not enter any extra characters such as blank or new$-$line$($Enter$).$ HINT: You need to enter $3$ characters. $(20$ points$)$