$7$ functions

$-$ main, resgiter$\_$student, print$\_$all, find$\_$by$\_$name,

delete, delete$\_$name, check$\_$duplicate

$$ All the functions need to change to use the list

$$ Do not keep a counter

$$ Traverse the list to NULL

$$ Functions print$\_$all and find$\_$by$\_$name are already

using pointers