using System;

using System.Collections.Generic;

/*

Full Name: Yang Zhang

IU Username: yz123

Replit Username: YangZhang16

*/

​

//Create a  Class, Vehicle, with the following:

public class Vehicle

{

/*Fields/Properties:

    + Make      :   string

    + Model     :   string

    + Price     :   int (with protection rule: price must greater than 8000; otherwise, set 8000 as defaul value.)

    + SerialNum :   string

all other should use be auto-implementation

*/

    public string Make{get;set;}

    public string Model{get;set;}

    private int price;

    public int Price

    {

        get

        {

            return price;

        }

        set

        {

            if(value>8000)

                price=value;

            else

                price=8000;

        }

    }

    public string SerialNum{get;set;}

​

/*

create two constructor

Methods:

    + Vehicle()--The first one, no parameter

    + Vehicle(string vmake, string vmodel, int vprice, string snum)--the second constructor, with four parameter

*/

    public Vehicle(){}

    public Vehicle (string vmake, string vmodel, int vprice,string snum)

    {

        Make = vmake;

        Model = vmodel;

        Price = vprice;

        SerialNum = snum;

    }

​

/*

    two function

    + DisplayInfo ()              : return string

    //Rule: return "vehicle"; can be override 

    + VerifySerialNum ()          : return bool

    //Rule: Check whether SerialNum starts with "A1". If so, return true; false, otherwise.

*/

    public virtual string DisplayInfo()

    {

        string info = "vehicle";

        return info;

    }

    public bool VerifySerialNum ()

    {

        if(SerialNum.StartsWith("A1"))

           return true;

         else

           return false;

    }

}

/*

In the class, Car (which is a child class of Vehicle) provide the following: 

Fields/Properties:

    + SeatCapacity    :   int; auto-implementation

*/

public class Car:Vehicle

{

    public int SeatCapacity{get;set;}

/*

Methods

    create two constructor

    + Car()

    + Car(string vmake, string vmodel, int vprice, string snum, int capacity) use base to call the parent's constructor

*/

    public Car(){}

    public Car(string vmake, string vmodel, int vprice, string snum, int capacity):base (vmake,vmodel,vprice,snum)

    {

        SeatCapacity=capacity;

    }

​

​

/*

    + DisplayInfo(): return string

    //Rule: need to override parent's function.

    //Based on the value of SeatCapacity, return corresponding values.

    //SeatCapacity less than 4: "Small Car"

    //SeatCapacity between 4 and 6: "Regular Car"

    //SeatCapacity greater than 6: "Large Car"

*/

    public override string DisplayInfo()

    {

        string info;

        if (SeatCapacity<4)

            info="Small Car";

        else if (SeatCapacity>=4 & SeatCapacity<=6)

            info="Regular Car";

        else

            info="Large Car";

        return info;

    }

}

/*

In the class, Truck (which is a child class of Vehicle) provide the following: 

Fields/Properties:

    + LoadCapacity    :   int

*/

public class Truck:Vehicle

{

    public int LoacCapacity{get;set;}

/*

Methods

    Two Constructor

    + Truck()

    + Truck(string vmake, string vmodel, int vprice, string snum, int load) use base to call parent constructor

*/

    public Truck(){}

    public Truck(string vmake, string vmodel, int vprice, string snum, int load):base (vmake,vmodel,vprice,snum)

    {

        LoacCapacity=load;

    }

​

/*

    + DisplayInfo(): return string

    //Rule: need to override parent's function.

    //Based on the value of LoadCapacity, return corresponding values.

    //SeatCapacity less than 5000: "Small Truck"

    //SeatCapacity between 5000 and 10000: "Regular Truck"

    //SeatCapacity greater than 10000: "Large Truck"

*/

    public override string DisplayInfo()

    {

        string info;

        if (LoacCapacity<5000)

            info="Small Truck";

        else if (LoacCapacity>=5000 & LoacCapacity<=10000)

            info="Regular Truck";

        else

            info="Large Truck";

        return info;

    }

}

​

class Program 

{

  //Add a public Vehicle List to hold Vehicle.

    public static List<Vehicle> VehicleList = new List<Vehicle>();

    public static void Main (string[] args) 

    {

    //Create a Car object and add it to the List

    //Make: "Tesla" Model: "Model Y", Price: 56690, SerialNum: "A1234", Seat Capacity:7

    Vehicle VehicleNew;

    VehicleNew = new Car("Tesla","Model Y",56690,"A1234",7);

    VehicleList.Add(VehicleNew);

    //Create a Truck object and add it to the List

    //Make: "Ford" Model: "F-250", Price: 34950, SerialNum: "B4322", Load Capacity:8000

    VehicleNew = new Truck("Ford", "F-250", 34950, "B4322", 8000);

    VehicleList.Add(VehicleNew);

    //Use a loop to show Vehicle information.

    //(1) Show vehicle's model, make and, price, and serial number

    //(2) Call VerifySerialNum() function to show whether the number is a verified number.

    //(3) Call DisPlayInfo() to show vehicle size.

    foreach (Vehicle V in VehicleList)

    {

        Console.WriteLine(V.Make);

    }

  }

}