using System;

public class Program

{

    public static void Main()

    {

Console.WriteLine("Hello, World!");

string[] product = { "shampoo", "conditoner", "car toy", "pen","football" };

int[] quantity = { 3, 4, 2, 4, 2};

​

​

int index = -1;

string opt = "";

​

do

{

    ShowProducts(product);

    Console.WriteLine("please enter it5em you would like to take");

    opt = Console.ReadLine()!;

    index = FindProduct(product, opt);

    if (index != -1)

    {

        if (quantity[index] > 0)

        {

​

            quantity[index] = quantity[index] - 1;

            Console.WriteLine("new stock level" + quantity[index]);

            Console.WriteLine("thank you");

​

​

​

        }

        else

        {

​

​

            Console.WriteLine("");

            Console.WriteLine("no more stock");

​

        }

​

​

​

    }

} while (opt != "exit");

void ShowProducts(string[] product)

{

​

​

    for (int x = 0; x < product.Length; x++)

    {

        Console.WriteLine(quantity[x] + product[x]);

    }

}

int FindProduct(string[] product , string item)

{

    for (int x = 0; x < product.Length; x++)

    {

​

​

​

        if (item == product[x])

        {

​

            return x;

        }

    }

    return -1;

​

    }

​

    }

}