#include "stdafx.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define clearInput getchar() != '\n';

typedef struct {
	char name[15];
	char unit[10];
	float ammount;
}item;



void newitem(item *pShopping, int index);
void printList(item *ppShopping, int SizeOfList);
int main(void) {


	item *shopping = NULL, *memoryTemp = NULL;
	int menu, flag = 1, listSize = 0;
	shopping = (item*)malloc(sizeof(item));


	while (flag == 1) {
		printf("menu: ");
		scanf_s("%d", &menu);
		clearInput;
		shopping;
		switch (menu) {
		case 1: memoryTemp = (item*)realloc(shopping, sizeof(item)*(listSize + 1));
			if (memoryTemp != NULL) {
				shopping = memoryTemp;
				newitem(shopping, listSize);
			}
			else {
				printf("Memory error\n");
			}
			break;

		case 2: printList(shopping, listSize);
			break;

		default: printf("Please enter a valid choice");

		}


	}


}

void newitem(item *pShopping, int index) {
	printf("Enter the name of the item: ");
	gets_s((pShopping + index)->name);

	printf("Enter the unit of your item: ");
	gets_s((pShopping + index)->unit);

	printf("Enter the ammount of your item: ");
	scanf_s("%f", &(pShopping + index)->ammount);
}
void printList(item *ppShopping, int SizeOfList) {

	int i;
	for (i = 0; i < SizeOfList; i++) {

		printf("%s\t%.2f\t%s", (ppShopping + i)->name, (ppShopping + i)->ammount, (ppShopping + i)->unit);
	}

}