Answer to Question #180343 in C# for Miley

Question

The system is a duck simulation game. There are ducks, each having weight and number of wings. All ducks can fly and quack, but different type of ducks fly and quack differently. For instance, let us consider the following–

1.       Rubber ducks don’t fly and squeak.

2.       Mallard ducks fly fast and quack loud.

3.       Redhead ducks fly slow and quack mild.

All ducks have following common property:

Type of Duck – Use enum to represent this value

Design classes and interfaces for the above story to meet the following requirements -

a.       Create a duck

b.       Show details of a duck, i.e. when you call for e.g. ShowDetails() method of a duck, duck should print its traits.

User following concepts: class, interfaces, polymorphism etc.

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace Q180343
{
    class Program
    {
        //Type of Duck – Use enum to represent this value
        enum DuckType { Rubber = 0, Mallard = 1, Redhead = 2 };


        public interface IShowDetail
        {
            void ShowDetails();
        }
        class Duck : IShowDetail
        {
            private double weight;
            private int numberWings;
            private DuckType duckType;
            /// <summary>
            /// Constructor
            /// </summary>
            public Duck() { }
            /// <summary>
            /// Constructor with arguments
            /// </summary>
            /// <param name="weight"></param>
            /// <param name="numberWings"></param>
            /// <param name="duckType"></param>
            public Duck(double weight, int numberWings, DuckType duckType)
            {
                this.weight = weight;
                this.numberWings = numberWings;
                this.duckType = duckType;
            }
            /// <summary>
            /// Show details
            /// </summary>
            public virtual void ShowDetails()
            {
                if (duckType == DuckType.Mallard)
                {
                    Console.WriteLine("Mallard duck:");
                }
                if (duckType == DuckType.Rubber)
                {
                    Console.WriteLine("Rubber duck:");
                }
                if (duckType == DuckType.Redhead)
                {
                    Console.WriteLine("Redhead duck:");
                }
                Console.WriteLine("Weight: {0}", weight);
                Console.WriteLine("Number of wings: {0}", numberWings);
            }
        }
        class RubberDuck : Duck
        {
            public RubberDuck(double weight, int numberWings, DuckType duckType)
                : base(weight, numberWings, duckType)
            {


            }
            public override void ShowDetails()
            {
                base.ShowDetails();
                Console.WriteLine("Rubber ducks don’t fly and squeak.");
            }
        }
        class MallardDuck : Duck
        {
            public MallardDuck(double weight, int numberWings, DuckType duckType)
                : base(weight, numberWings, duckType)
            {


            }
            public override void ShowDetails()
            {
                base.ShowDetails();
                Console.WriteLine("Mallard ducks fly fast and quack loud.");
            }
        }
        class RedheadDuck : Duck
        {
            public RedheadDuck(double weight, int numberWings, DuckType duckType)
                : base(weight, numberWings, duckType)
            {


            }
            public override void ShowDetails()
            {
                base.ShowDetails();
                Console.WriteLine("Redhead ducks fly slow and quack mild.");
            }
        }


        static void Main(string[] args)
        {
            //Create ducks
            IShowDetail[] ducks = new IShowDetail[3];
            ducks[0] = new RubberDuck(12, 2, DuckType.Rubber);
            ducks[1] = new MallardDuck(9, 2, DuckType.Mallard);
            ducks[2] = new RedheadDuck(15, 4, DuckType.Redhead);


            //Show details of a duck, i.e. when you call for e.g. ShowDetails() method of a duck, duck should print its traits.
            for (int i = 0; i < 3; i++)
            {
                ducks[i].ShowDetails();
                Console.WriteLine();
            }
            Console.ReadLine();
        }
    }
}