재사용 가능한 C로 만든 ArrayList (미구현 된거 있음 ㅠ)

#include <stdio.h>
#include <stdlib.h>

#define INIT_LENGTH 100;

struct ArrayList
{
 int *dataSet;
 int length;
 int initLength;
};

void initList(struct ArrayList*);
void initListSize(struct ArrayList*, int);
void add(struct ArrayList*, int);
void addInIndex(struct ArrayList*, int, int);
void erase(struct ArrayList*,int);
void replace(struct ArrayList*, int, int);
void reset(struct ArrayList*);
void display(struct ArrayList*);
int get(struct ArrayList*, int);
int isFull(struct ArrayList*);
int isEmpty(struct ArrayList*);
int isAvailableIndex(struct ArrayList*, int);

void initList(struct ArrayList* list){
 list->initLength = INIT_LENGTH;
 list->dataSet = calloc(list->initLength,sizeof(int));
 list->length = 0;
}

void initListSize(struct ArrayList* list, int size){
 initList(list);
 list->initLength = size;
}

void add(struct ArrayList* list, int value){
 if(!isFull(list)){
  list->dataSet[list->length] = value;
  list->length++;
 } else
  printf("배열이 가득 찼습니다.");
}
void addInIndex(struct ArrayList* list, int index, int value)
{
 ;
}
void erase(struct ArrayList* list,int index){
 if(isAvailableIndex(list, index)){
  ; 
 }
}
void replace(struct ArrayList* list, int index, int value){
 if(isAvailableIndex(list, index))
  list->dataSet[index] = value;
}
void reset(struct ArrayList* list)
{
 int originSize = list->initLength;
 free(list);
 initListSize(list, originSize);
}
void display(struct ArrayList* list){
 int i;
 for(i = 0 ; i < list->length ; i++)
  printf("[ %d ] ", list->dataSet[i]);
 printf("\n");
}
int get(struct ArrayList* list, int index){
 if(isAvailableIndex(list, index))
  return list->dataSet[index];
}
int isFull(struct ArrayList* list){
 return list->initLength == list->length;
}
int isEmpty(struct ArrayList* list){
 return list->length == 0;
}
int isAvailableIndex(struct ArrayList* list, int index){
 if(index > -1 && index < list->initLength && index < list->length)
  return 1;
 else
  return 0;
}
void main(){
 int i;
 struct ArrayList* list = malloc(sizeof(struct ArrayList));
 initList(list);
 for(i = 1 ; i < 100 ; i += 5){
  add(list, i);
 }
 display(list);
}