Create an application in C# that will accept sales information and calculate the total bill.

There are 3 products which can be sold:
Product 1 with price of $2.98
Product 2 with price of $4.50
Product 3 with price of $9.75
The application should prompt the user for product and quantity,
use a switch statement to identify the correct item price
and calculate the total bill for all items selected.
Use a sentinel controlled loop to determine how many products are sold.

write a program that asks for the price of each item, and then displays the subtotal of sale, the amount of sales tax, and the total. using python.

Do you Want a Zero In This Class?

Sure! Here is a step-by-step guide on how to create an application in C# that will accept sales information and calculate the total bill:

Step 1: Create a new C# Console Application project in your preferred development environment.

Step 2: Define the variables needed for calculations. In this case, you will need variables for product quantity, product choice, product price, and total bill.

```csharp
int quantity;
int choice;
double price;
double totalBill = 0;
```

Step 3: Use a loop to prompt the user for product and quantity until they choose to stop. We can use a sentinel controlled loop with a sentinel value, such as -1, to stop the loop.

```csharp
while (true)
{
// Prompt the user for product choice
Console.Write("Enter product choice (1-3) or -1 to stop: ");
choice = int.Parse(Console.ReadLine());

if (choice == -1)
break;

// Prompt the user for product quantity
Console.Write("Enter product quantity: ");
quantity = int.Parse(Console.ReadLine());

// Use a switch statement to identify product price based on choice
switch (choice)
{
case 1:
price = 2.98;
break;
case 2:
price = 4.50;
break;
case 3:
price = 9.75;
break;
default:
Console.WriteLine("Invalid product choice!");
continue;
}

// Calculate the total bill for the current product based on quantity and price
double productTotal = quantity * price;
totalBill += productTotal;
}

// Display the total bill to the user
Console.WriteLine("Total bill: $" + totalBill);
```

Step 4: Build and run the application. It will continue to prompt the user for product and quantity until they choose to stop with -1. The total bill will be calculated and displayed at the end.

That's it! You have successfully created an application in C# that calculates the total bill based on sales information.

To create an application in C# that accepts sales information and calculates the total bill, you can follow these steps:

Step 1: Declare variables and initialize the product prices
First, declare a variable to store the total bill, let's call it totalBill and initialize it to 0. Then, declare variables for the prices of the three products:

```csharp
double totalBill = 0;
double product1Price = 2.98;
double product2Price = 4.50;
double product3Price = 9.75;
```

Step 2: Prompt the user for product and quantity
Use a sentinel-controlled loop to determine how many products are sold. In each iteration, prompt the user for the product number and quantity.

```csharp
int productNumber;
int quantity;

while (true)
{
Console.WriteLine("Enter the product number (1, 2, or 3) or enter -1 to exit:");
productNumber = int.Parse(Console.ReadLine());

// Exit loop if sentinel value -1 is entered
if (productNumber == -1)
break;

Console.WriteLine("Enter the quantity sold:");
quantity = int.Parse(Console.ReadLine());

// Calculate and update the total bill based on the chosen product and quantity
switch (productNumber)
{
case 1:
totalBill += product1Price * quantity;
break;
case 2:
totalBill += product2Price * quantity;
break;
case 3:
totalBill += product3Price * quantity;
break;
default:
Console.WriteLine("Invalid product number.");
break;
}
}
```

Step 3: Print the total bill
After the user has finished entering the sales information, we can print the total bill:

```csharp
Console.WriteLine("Total bill: $" + totalBill);
```

Here's the full code for the application:

```csharp
using System;

namespace SalesApplication
{
class Program
{
static void Main(string[] args)
{
double totalBill = 0;
double product1Price = 2.98;
double product2Price = 4.50;
double product3Price = 9.75;

int productNumber;
int quantity;

while (true)
{
Console.WriteLine("Enter the product number (1, 2, or 3) or enter -1 to exit:");
productNumber = int.Parse(Console.ReadLine());

// Exit loop if sentinel value -1 is entered
if (productNumber == -1)
break;

Console.WriteLine("Enter the quantity sold:");
quantity = int.Parse(Console.ReadLine());

// Calculate and update the total bill based on the chosen product and quantity
switch (productNumber)
{
case 1:
totalBill += product1Price * quantity;
break;
case 2:
totalBill += product2Price * quantity;
break;
case 3:
totalBill += product3Price * quantity;
break;
default:
Console.WriteLine("Invalid product number.");
break;
}
}

Console.WriteLine("Total bill: $" + totalBill);
}
}
}
```

Now, you can run the application, enter the product numbers and quantities, and it will calculate the total bill for you.