Question

I've been trying to get this written for days, and cannot seem to get this written. I keep restarting, but cannot get it to do the math I'm needing or to have a main menu with the list.

//Int32 price;
//double tax;
Int32 intTime = 3000;
Boolean varIsValid = true;
object price = null;
//double tax = .08 * Convert.ToDouble(price) / 100;

while (varIsValid)
{
Console.WriteLine("Welcome to CIS 120");
Console.WriteLine("Shopping List Project");
Console.WriteLine("Please Enter Price");
//if (Console.ReadLine() != "exit") ;
Console.ReadKey();
double tax = .08 * Convert.ToDouble(price) / 100;
}
{
{

}

}
System.Threading.Thread.Sleep(intTime);
Environment.Exit(0); //Exit the program

C# Function Project Assignment

A function processes a block of code when the function is called. In this assignment, you are required to use functions within the program. As a programmer for a small local business, they need a tool that will keep track of a user’s shopping list and calculate the total with tax. All of this is being done while the users are shopping within the store from a mobile device. The user should know what the grand total is before the user checks out with a cashier. Follow the program requirements below, you have the flexibility to be as creative as needed. This program can be time-consuming and there will be no other flowchart or pseudocode assignments this week.

Shopping List Program Requirements:

1. The program should display a shopping list with amounts within the main menu (Max 10 Items)
2. The program accepts user input for each shopping list items (unlimited)
3. Calculate the users Total with Tax as they select a new item
4. The program should be able to delete a saved item
5. Display the users total only at all times
6. Give the user a menu option to display the current shopping list, only when requested
7. The Total with Tax must be displayed at all times even while viewing the shopping list

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Here a new Console Application in C# is created using Visual Studio 2017 with name "Demo_ShoppingList".This application contains a class with name "Program.cs".Below are the details of thus class.

Program.cs :

//namespace
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//application namespace
namespace Demo_ShoppingList
{
class Program //class
{
static int ij = 0;
//declaring variables
const double TAX = 0.08;
static double totalAmount = 0;
static double tax = 0;
static bool flag = true;
//creating two dimensional array to store product for shopping and their price
static string[,] products = new string[,]
{
{"Smartphone","Laptop","Digital Watch","Smart Band","Calculator","Tab","Head set","PC","Hair Oil","Hair Dryer" },
{"8000","18000","2000","1200","780","7000","700","12000","200","600" }
};
//array to hold current shopping list
static string[,] currentProducts = new string[10, 10];

static void Main(string[] args)
{
Console.WriteLine("============Welcome to CIS 120===============");
Console.WriteLine("============Shopping List Project=============");
//using while loop to display menus
while (flag)
{
Console.WriteLine("----Select Menu ------");
Console.WriteLine("1.Display Products for Shopping.\n2.Add product to Cart.\n3.Remove product from Cart.\n4.Display Current Shopping List\n5.Displat Total and Tax Amount\n6.Exit");
Console.WriteLine("===============================================");
//asking user to enter choice
Console.Write("Enter Choice : ");
//read choice
int choice = int.Parse(Console.ReadLine());
//using switch for choice processing
switch (choice)
{
case 1://calling method to display shopping List
displayShoppingList();
break;
case 2://calling method to add items in shopping list
addProduct();
break;
case 3://calling method to remove product
removeProduct();
break;
case 4://calling method to display current shopping list
currentShoppingList();
break;
case 5://display total and Tax
displayTotalTax();
break;
case 6://setting flag to false
flag = false;
break;
default://for any invalid choice
Console.WriteLine("Enter valid choice");
break;
  
}
}
}
//method to displayShoppingList()
public static void displayShoppingList()
{
Console.WriteLine("{0,-5} {1,-15} {2,2}","No.","Name","Price");
//using for loop display items
for (int i = 0; i < products.GetLength(1); i++)
{
//display products
Console.WriteLine("{0,2} {1,-15} {2,2}",i+1,products[0,i],products[1,i]);
}
Console.WriteLine("************************************************");
}
//method to add product to shopping List
public static void addProduct()
{
//variable for while to continue
bool counter = true;
  
while (counter)
{
//asking user to enter product choice
Console.WriteLine("Enter product number to ADD");
//READING number
int no = int.Parse(Console.ReadLine());
if (no < 0 && no > 10)
{
Console.WriteLine("Enter valid choice");
}
else
{
currentProducts[0, ij] = products[0, no-1];//adding product current product
currentProducts[1, ij] = products[1, no-1];//adding price in current product
totalAmount = totalAmount + double.Parse(products[1, no-1]);//calculate total amount
tax = tax + (totalAmount * 0.08);//calculate tax on amount
//display total amount and tax
Console.WriteLine("Total Amount : {0} , Tax : {1}",totalAmount.ToString("0.00"),tax.ToString("0.00"));
Console.WriteLine("************************************************");
ij++;//increment value
counter = false;
}
}
}
//method to remove product from shopping List
public static void removeProduct()
{
//asking user to enter product choice to remove
Console.WriteLine("Enter product number to remove");
//READING number
int no = int.Parse(Console.ReadLine());
currentProducts[0, no - 1] = "0"; //removing price in current product
currentProducts[1, no-1]="0";//removing price in current product
totalAmount = totalAmount - double.Parse(currentProducts[1, no - 1]);//calculate total amount
tax = tax - double.Parse(currentProducts[1, no - 1]) * 0.08;
//display total amount and tax
Console.WriteLine("Total Amount : {0} , Tax : {1}", totalAmount.ToString("0.00"), tax.ToString("0.00"));
Console.WriteLine("************************************************");
ij--;//increment value

}
//method to display current shopping List
public static void currentShoppingList()
{
Console.WriteLine("-----------------CURRENT SHOPPING LIST--------------------------");
Console.WriteLine("{0,-5} {1,-15} {2,2}", "No.", "Name", "Price");
//using for loop display items
for (int i = 0; i < currentProducts.GetLength(1); i++)
{
if (currentProducts[0, i] != null && currentProducts[1, i] != null && currentProducts[0, i] !="0" && currentProducts[1, i] !="0")
{
//display products
Console.WriteLine("{0,-5} {1,-15} {2,2}", i + 1, currentProducts[0, i], currentProducts[1, i]);
}
}
Console.WriteLine("************************************************");
}
//method to display total and tax
public static void displayTotalTax()
{
Console.WriteLine("************************************************");
Console.WriteLine("Total Amount : {0} , Tax : {1}", totalAmount.ToString("0.00"), tax.ToString("0.00"));
Console.WriteLine("************************************************");
}

}
}

======================================================

Output : Run application using F5 and will get the screen as shown below

Screen 1 :Screen showing menus

Screen 2 :Screen showing shopping list

Screen 3 :Adding product into the list

Screen 4 :Screen showing current shopping list

Screen 5 :Screen removing product from the list

Screen 6 :Screen showing total amount and tax

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.