c programming seashell

Implement the Sequence "ADT" module. It's not a full ADT because there is no information hiding, but it is close. Your Sequence ADT will have a maximum length (MAXLEN) of 1000.

// NOTE: ALL sequence parameters must be valid extern const int MAXLEN; /7 1000 struct sequence fi int len; int data[ 1000 // sequence_init (seq) initilizes sequence to be empty // effects: modifies seg // time: o (1) void sequence_init(struct sequence *sea) // sequence_length(seq) returns the number of items in seq /7 time: 0(1) int sequence_length (const struct sequence *seq); /l sequence_item_at (seq, pos) returns the item in seq at position pos // requires: 0pos= pos) // requires: 0