Question

Using C#, write a program.

You are a coffee and tea shop. You will allow customers to enter their orders. You sell coffee and tea in three sizes, small coffee for $1.00, medium for $1.20, and large for $1.40. Tea is $1.20, $1.40, and $1.60. You will let ask the user what they want, size, ask if they want to order anything else, continue taking their order. At the end show them how much they owe. If they order more than $20, give them a 5% discount. Show them their adjusted total.

Answer 1

Here is the program as per your requirements.

The user can enter upto as per the user wishes.

I have given two outputs one with discount and another with not

using System;

public class Example
{
public static void Main()
{
float total=0;
int choice = 0;
int qty = 0;
float discount =0;
string str;
do // run the code until the user presses 7
{
  
str ="Pleae enter \n 1. Small Coffee \n 2.Medium Coffee \n 3.Large Coffee \n 4. Small Tea \n 5.Medium Tea \n 6.Large Tea \n 7. Exit";
Console.WriteLine(str); // printing the string to the user
choice = Convert.ToInt32(Console.ReadLine()); // reading from the keyboard
if(choice == 1) // if the user enters 1 do this.
{
Console.WriteLine(" Enter quantity:");
qty = Convert.ToInt32(Console.ReadLine());
total = total + qty * 1.0f;
}   
else if(choice == 2)
{
Console.WriteLine(" Enter quantity:");
qty = Convert.ToInt32(Console.ReadLine());
total = total + qty * 1.2f;
}   

else if(choice == 3)
{
Console.WriteLine(" Enter quantity:");
qty = Convert.ToInt32(Console.ReadLine());
total = total + qty * 1.4f;
}

else if(choice == 4)
{
Console.WriteLine(" Enter quantity:");
qty = Convert.ToInt32(Console.ReadLine());
total = total + qty * 1.2f;
}   
else if(choice == 5)
{
Console.WriteLine(" Enter quantity:");
qty = Convert.ToInt32(Console.ReadLine());
total = total + qty * 1.4f;
}   

else if(choice == 6)
{
Console.WriteLine(" Enter quantity:");
qty = Convert.ToInt32(Console.ReadLine());
total = total + qty * 1.6f;
}
else
{
break;
}

} while(choice < 1 && choice > 7);
Console.WriteLine("You have to pay: {0};", total);
if(total > 20)
{
discount = total * 5 / 100;
total = total - discount;
Console.WriteLine("You got discount {0}", discount);

Console.WriteLine("You have to pay after discount {0}", total);
}
  

}
}

Output:

Output Pleae enter 1. Small Coffee 2. Medium Coffee 3.Large Coffee 4. Small Tea 5. Medium Tea 6 Enter quantity: You have to pay: 3:

utput Pleae enter 1. Small Coffee 2. Medium Coffee 3 . Large Coffee . Small Tea 5. Hedium Tea Enter qquantity: You have to pay: 31: You got discount 1.55 You have to pay after discount 29.45