using System;

//number 1

/*

1. Create a method named getCircleDiameter that takes a radius of double type as the parameter.

The method should return the diameter of a circle. To compute the diameter of a circle, multiply the radius by 2.

*/

​

public class Diameter

{

    public double getCircleDiameter(double radius)

    {

        return radius * 2;

    }

}

​

//number 2

/*

2. Create a struct named Product where its fields are code, description, and price.

*/

​

public class structure

{

    public struct Product

    {

        public string code;

        public string description;

        public double price;

    }

}

​

//nummber 3

/*

3. Create a class named Person with an instance variable named full_name. Declare one (1) constructor without 

a parameter and initialize the variable with a default value.

*/

​

public class Person

{

    public string full_name;

    public void name()

    {

        full_name = "Jonathan Kent";

    }

}

​

​

//number 4

/*

4. Create a class named Account with an instance variable named account_number. Make this class a member

of the Accounts namespace. 

*/

​

namespace Accounts

{

    public class Account

    {

        public int account_number;

    }

}