using System;

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//create a customer class to store customer information along with an order class that will contain order detail information.

public class Program

{

    public static void Main()

    {

//customer class instances are created

             Customer[] customers = new Customer[3];

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          //Assigning the customer class field with the given data

            customers[0] = new Customer() { firstname = "Joe", lastname= "Smith", arrayoforders = new Order[3] };

​

            //for 1st customer the 3 orders are created 

            customers[0].arrayoforders[0] = new Order() { description = "Book", price =100M , quantity = 1 };

            customers[0].arrayoforders[1] = new Order() { description = "Car", price = 19.9M, quantity = 2 };

            customers[0].arrayoforders[2] = new Order() { description = "Plane", price = 20M, quantity = 3 };

            //Assigning the 2nd customer fileds with the given data

            customers[1] = new Customer() { firstname = "Sally", lastname = "Jones", arrayoforders = new Order[3] };

            // for 2nd customer the 3 orders are created

            customers[1].arrayoforders[0] = new Order() { description = "Shoe", price = 300M, quantity = 1 };

            customers[1].arrayoforders[1] = new Order() { description = "Dress", price = 25000M, quantity = 2};

            customers[1].arrayoforders[2] = new Order() { description = "Shoes", price = 30M, quantity = 1 };

            //Assigning the 3rd customer fields with the given data

            customers[2] = new Customer { firstname = "Ricky", lastname = "White", arrayoforders = new Order[3] };

            // for 3rd customer the 3 orders are created

            customers[2].arrayoforders[0] = new Order() { description = "Coat", price = 101M, quantity = 2 };

            customers[2].arrayoforders[1] = new Order() { description = "Jacket", price = 110M, quantity = 1 };

            customers[2].arrayoforders[2] = new Order() { description = "Razor", price = 19.99M, quantity = 1 };

            //loop for printing the desired output

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

            {

                if(customers[x]!=null)

                {

                    Console.WriteLine("\n\n{0} {1}\n",customers[x].firstname,customers[x].lastname);

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                for(int y=0;y<customers[x].arrayoforders.Length;y++)

                {

                    if(customers[x].arrayoforders[y]!=null)

                    {

                        Console.Write("{0}-${1}-{2},",customers[x].arrayoforders[y].description,customers[x].arrayoforders[y].price,customers[x].arrayoforders[y].quantity);

                    }

                }

              }

            }

         }

     }

​

    public class Order

    {

          // Order class field names description, price and quantity

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        public string description;

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        public decimal price;

        public int quantity;

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​

    }

​

​

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    public class Customer   

    {

        //data members of the customer class declared

        public Order[] arrayoforders;

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        public string firstname;

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        public string lastname;

            }

​