为什么使用Visual Studio有不必要的问题？

Question

在下面的代码中，我有错误：

"IntelliSense: identifier "print_time" is undefined"

它抱怨一个名为print_time（）的函数，因为它无法识别该函数实现的头文件。函数实现是一个名为time.C的文件，它需要Time.h头。有没有一种特殊的方法在Visual Studio中声明头文件而不是这样做：#include"Time.h"？这是一个完整的代码：

#include<stdlib.h>
#include<stdio.h>
#include "OList.h"
#include "Time.h"


void initialize_list(TOrderedList *list) {
    list->count = 0;
}

int insert_item(TOrderedList *list, Titem item) {
int find_position(Titem *array, Titem item, int number_of_items);
int make_room(Titem *array, int where, int size_of_array);
int i;

if (list->count < MAX ) {
     i = find_position(list->array, item,  list->count);
     make_room(list->array,i, list->count);
     list->array[i] = item;
     list->count++;
     return 1;
} else
     return 0;
}

int retrieve_ith(const TOrderedList *list, int i, Titem *item) {
     if (!list_empty(list) && i <list->count) {
          *item = list->array[i];
          return 1;
     } else
          return 0;
}

int number_of_items(const TOrderedList *list){
    return list->count;
}

int list_empty(const TOrderedList *list) {
    return !list->count;
}

/* These are "private" low level functions used to implement public
   operation functions for list */
int find_position(Titem *array, Titem item, int number_of_items) {
    int i=0;

    while (compare(array[i], item) == -1 && i < number_of_items) i++;
    //while (compareTime(array[i], item) == -1 && i < number_of_items) i++;
    return i;
}

int make_room(Titem *array, int where, int number_of_items) {
    int i;

    if (number_of_items < MAX) {
        for (i = number_of_items - 1 ; i >= where ; i-- )
            array[i+1] = array[i];
    return 1;
    } else
        return 0;
}


/*
 * These are operation functions for abstract datatype Titem 
 */
int read_item(Titem *item) {
     fflush(stdin); // flush (emtpy) the input keyboard buffer
     *item = getchar();
     return 1;
}

void print_item(Titem item) {
  //printf("%c\n", item);
    print_time(item, " ");
}

int compare(Titem item1 , Titem item2) {
   /*if ((int)item1 < (int)item2)
        return -1;
    else if ((int)item1 == (int)item2)
        return 0;
    else
        return 1;*/
    return compareTimes(item1,item2);
}