Can't initialize my array counter in C despite trying everything - c

Question

I've been working on this school assignment which creates a restaurant menu, and I have an array to store everything that a person orders. The array that stores the orders ordered is array OrderedItems [30]. This array is basically a counter. When a person orders order number 1 as an example OrderItems[1] increases by 1.
I've tried to initialize by using OrderedItems [30] = {0}, and using a for loop to initialize every spot individually, However, that didn't work. Please help me initialize this array. I've also tried memset(OrderedItems, 0, 30); and this didn't work too so I really have no clue what to do.
I also want to add that I've tried to globally declare the OrderedItems array since I've heard that all global declarations are automatically initialized to 0, but that also didn't work.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <windows.h>
FILE *fPointer1; //for food//
FILE *fPointer2; //for invoice//
int count;
char name[50];
float price;
void FunctionToPrintFoodItems (void)
{
fPointer1 = fopen ("Food.txt", "a+");
float price;
printf("ITEMCODE\tDESCIPTION\tPRICE (RM)\n");
while (!feof (fPointer1))
{
fscanf(fPointer1, "%d %s %f", &count, name, &price);
printf("%d\t\t%s\t\t%.2f\n", count, name, price);
}
fclose (fPointer1);
}
void clrscr()
{
system("#cls||clear"); //might not need. Will delete it not needed//
}
void debug (void)
{
printf("THIS IS PRINTED");
}
#define clear clrscr ();
#define printfood FunctionToPrintFoodItems();
#define de debug();
int main ()
{
fPointer1 = fopen("Food.txt", "w");
fprintf(fPointer1, "1 BigM 10.40\n");
fprintf(fPointer1, "2 Cheeseburger 9.45");
fclose (fPointer1);
int i;
int MainMenuCode;
int additems = 0;
int orderitems;
int item;
int ordered;
int OrderedItems[30] = {0};
memset(OrderedItems, 0, 30);
for (i=0 ; i < 30 ; i++)
{
OrderedItems[i] = NULL;
printf("%d: %d\n", i, OrderedItems);
}
do
{
printf("WELCOME TO RESTOURANT MAC C - Main Menu\n\n");
printf("[1] Add new food items\n\n");
printf("[2] Take order\n\n");
printf("Enter ITEM CODE (0 to Quit) : ");
scanf("%d", &MainMenuCode);
if (MainMenuCode == 1)
{
clear;
additems = 1;
printf("WELCOME TO RESTAURANT MAC C - Add Menu\n\n");
printfood;
printf("\n");
while ( additems == 1 )
{
printf("Enter description (0 to Main Menu) : ");
scanf("%s", name);
if (strcmp (name, "0") == 0)
{
additems = 0;
clear;
break;
}
printf("Enter price (RM) : ");
scanf("%f", &price);
count ++;
fPointer1 = fopen ("Food.txt", "a");
printf("\n%d\t\t%s\t\t%.2f\n\n", count, name, price);
fprintf(fPointer1, "\n%d %s %.2f", count, name, price);
fclose (fPointer1);
}
}
else if (MainMenuCode == 2)
{
clear;
orderitems = 1;
printf("WELCOME TO RESTAURANT MAC C- Take Order\n\n");
printfood;
while (orderitems == 1)
{
fPointer1 = fopen ("Food.txt", "a+");
printf("Enter ITEM CODE (0 to Quit, 100 for Main Menu) : ");
scanf("%d", &item);
if (item == 100) break;
else if (item == 0) //final approach//
{
fPointer2 = fopen ("Invoice.txt", "a+");
de;
fclose (fPointer2);
return 0;
}
else if (item == 900)
{
for (i=0 ; i < 30 ; i++)
printf("%d: %d\n", i, OrderedItems);
}
else if (item > count || item < 1)
{
printf("\n\nITEM CODE not available. Try again\n\n");
}
else
{
OrderedItems[item]++;
printf("%d %d", item, OrderedItems);
}
fclose (fPointer1);
}
}
else printf("Please enter a valid Menu Code\n");
} while (MainMenuCode != 0);
return 0;
}

Answer 1

- printf("%d: %d\n", i, OrderedItems);
+ printf("%d: %d\n", i, OrderedItems[i]);
OrderedItems is an address of the array's first element.
OrderedItems[0] is a value of the array's first element.
OrderedItems[i] is a value of the array's i-th element.

Answer 2

The call to memset should specify how many bytes to set. You need to tell it the size of the type to initialise.
memset(OrderedItems, 0, 30 * sizeof(int))