How can I read Header file in VSCode in mac? - visual-studio-code

Question

I have some errors in VSCode.
I think VSCode can't read header file, but not exactly.
Environment is mac, m1. I already installed C/C++, C/C++ Extension Pack.
Here is my main code
#include <stdio.h>
#include "ArrayList.h"
int main(void){
List list;
int data;
ListInit(&list);
LInsert(&list, 11); LInsert(&list, 11);
LInsert(&list, 22); LInsert(&list, 22);
LInsert(&list, 33);
printf("현재 데이터 수 ; %d \n", LCount(&list));
if(LFirst(&list, &data)){
printf("%d", data);
while(LNext(&list, &data))
printf("%d", data);
}
printf("\n\n");
if(LFirst(&list, &data)){
if(data == 22)
LRemove(&list);
while(LNext(&list, &data)){
if(data == 22)
LRemove(&list);
}
}
printf("현재 데이터의 수");
if(LFirst(&list, &data)){
printf("%d", data);
while(LNext(&list, &data))
printf("%d", data);
}
printf("\n\n");
return 0;
}
...And this is "ArrayList.h"
#ifndef __ARRAY_LIST_H__
#define __ARRAY_LIST_H__
#define TRUE 1
#define FALSE 0
#define LIST_LEN 100
typedef int LData;
typedef struct __ArrayList
{
LData arr[LIST_LEN];
int numOfData;
int curPosition;
} ArrayList;
typedef ArrayList List;
void ListInit(List * plist);
void LInsert(List * plist, LData data);
int LFirst(List * plist, LData * pdata);
int LNext(List * plist, LData * pdata);
LData LRemove(List * plist);
int LCount(List * plist);
#endif
..And this is "ArrayList.c"
#include <stdio.h>
#include "ArrayList.h"
void ListInit(List * plist)
{
(plist->numOfData) = 0;
(plist->curPosition) = -1;
}
void LInsert(List * plist, LData data)
{
if(plist->numOfData > LIST_LEN)
{
puts("Can't save data.");
return;
}
plist->arr[plist->numOfData] = data;
(plist->numOfData)++;
}
int LFirst(List * plist, LData * pdata)
{
if(plist->numOfData == 0)
return FALSE;
(plist->curPosition) = 0;
*pdata = plist->arr[0];
return TRUE;
}
int LNext(List * plist, LData * pdata)
{
if(plist->curPosition >= (plist->numOfData)-1)
return FALSE;
(plist->curPosition)++;
*pdata = plist->arr[plist->curPosition];
return TRUE;
}
LData LRemove(List * plist)
{
int rpos = plist->curPosition;
int num = plist->numOfData;
int i;
LData rdata = plist->arr[rpos];
for(i=rpos; i<num-1; i++)
plist->arr[i] = plist->arr[i+1];
(plist->numOfData)--;
(plist->curPosition)--;
return rdata;
}
int LCount(List * plist)
{
return plist->numOfData;
}
and here is my error.
cd "/Users/henry/C:c++/3장 연결리스트1/" && gcc ListMain.c -o ListMain && "/Users/henry/C:c++/3장 연결리스트
1/"ListMain
Undefined symbols for architecture arm64:
"_LCount", referenced from:
_main in ListMain-651a0c.o
"_LFirst", referenced from:
_main in ListMain-651a0c.o
"_LInsert", referenced from:
_main in ListMain-651a0c.o
"_LNext", referenced from:
_main in ListMain-651a0c.o
"_LRemove", referenced from:
_main in ListMain-651a0c.o
"_ListInit", referenced from:
_main in ListMain-651a0c.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
All codes are in same folder. What's my problem?