#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define size 6

void exit();
void sort();
void display();
void startstack();
void push();
void create();
void enterpid();
int temp, productid, bid, flag, stop, choice, select;

struct stack{
	int topofpstack;
	int productid[size];
	int bid[6];
}s;


void create()
{
	s.topofpstack  = -1;
}

void main()
{
	create();
	flag = 0;
	system("cls");
	printf("\n Automated Stockroom\n");
	printf("\n 1. Insertion");
	printf("\n 2. Display");
	printf("\n 3. Exit");
	scanf_s("%d", &select);
	switch (select)
	{
		case 1:
			do
			{
				startstack();
				flag = 1;
			} while (flag != 1);
		case 2:
			display();
		case 3:
			exit();
	}
}

void startstack()
{
	stop = 0;
	printf("\n Enter the Bin ID: ");
	scanf_s("%d", &bid);
	do{
		enterpid();

	printf("\n Do you want to enter another Product ID?");
	scanf_s("%s", &choice);
		switch (choice)
		{
			case 'Y':
			case 'y':
				enterpid();
			case  'N':
			case 'n':
				stop = 1;
				return main;
		}
	} while (stop != 1);
	return main();
}

void enterpid()
{
	printf("\n Enter the Product ID: ");
	scanf_s("%d", &productid);

	push(productid);
}

void push(int productid)
{
	if (s.topofpstack == size - 1)
	{

	}
	else
	{
		s.topofpstack++;
		s.productid[s.topofpstack] = productid;
		if (s.topofpstack = size)
		{

		}
		sort();
	}
}

void display()
{
	int temp = s.topofpstack;
	if (temp == -1)
	{
		printf("it's emtpy");
	}
	else
	{
		while (temp != 1)
		{
			printf("\n\n %d", s.productid[temp]);
			temp--;
		}
	}
	system("pause");
	return main();
}

void sort()
{

}

void exit()
{
	exit(0);
}