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added Inheritance program #14

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235 changes: 235 additions & 0 deletions Inheritance/Program.cs
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using System;
using System.Collections.Generic;
using System.Linq;

namespace Inheritance
{
class Program
{
// this is the main entry point and driver for this program
static void Main(string[] args)
{
// initialize an empty list to hold the inventory
List<Vehicle> inventory = new List<Vehicle>();

// this varaible tracks if the program should continue asking the user for input or exit
bool done = false;

// while we are not done
while (!done)
{
// ask the user for what they want to do
String option = getUserOption();

// if they want to list the inventory
// call the method to list it
if (option == "list")
{
printInventory(inventory);
}
// if they want to add an item to the inventory,
// call the method to get the item from the user
else if (option == "add")
{
Vehicle newItem = getNewItem();
inventory.Add(newItem);
}
// if they want to delete an item,
// call a method to get the index of the item they want to delete
else if (option == "delete")
{
int idx = getDeletePosition();
if (idx >=0 && idx < inventory.Count)
{
inventory.RemoveAt(idx);
} else {
Console.WriteLine("Bad position");
}
}
// if they want to quit,
// set the done flag to false, so the main loop exits
else if (option == "quit")
{
done = true;
}

// print an empty line just to break up the input
// Console.clear would also work here
Console.WriteLine();
}
}

// this method ask the user for a position they want to delete.
// and returns it. if thy enter an non integer value, we return -1
public static int getDeletePosition()
{
// ask the user for a position.
Console.Write("Choose an item to delete by entering its number: ");
String input = Console.ReadLine();
try
{
// try to convert their input to an int
// we subtract 1 from their input because the index in the list starts at 0
// but we displayed the list with numbers starting at 1.
return Convert.ToInt32(input)-1;
}
catch
{
// reutrn -1 if we could not convert their input to an int
return -1;
}

}

// this method asks the user for the item they want to add to the inventory
// and return their input
public static Vehicle getNewItem()
{
//asks for type of vehicle for use in logic below
Console.Write("Enter a type of vehicle (Car, Motorcycle, Truck)");
string type = Console.ReadLine();

//if unavailable vehicle type is entered prompts user to select available vehicle type
if (type.ToLower() != "car" && type.ToLower() != "truck" && type.ToLower() != "motorcycle")
{
Console.Write("Incorect vehicle type entered. Please rnter available type of vehicle (Car, Motorcycle, Truck)");
type = Console.ReadLine();
}

//while type is available type
while(type.ToLower() == "car" || type.ToLower() == "truck" || type.ToLower() == "motorcycle")
{
// ask for an item, and return the input
Console.Write("Enter a color: ");
String color = Console.ReadLine();

Console.Write("Enter a make: ");
String make = Console.ReadLine();

Console.Write("Enter a model: ");
String model = Console.ReadLine();

//depending on vehicle type asks user for relevent information then instantiated new vehicle of type selected
if(type.ToLower() == "car")
{
Console.Write("Is hatch back? (y/n) ");
String isHatchback = Console.ReadLine().ToLower();
Vehicle newOne = new Car(color, make, model, isHatchback == "y");
return newOne;
}
else if(type.ToLower() == "motorcycle")
{
Console.Write("type of motorcycle? (Chopper, Sports Bike, Scooter, Motor Tricycle)");
String isTricycle = Console.ReadLine().ToLower();
Vehicle newOne = new Motorcycle(color, make, model, isTricycle == "motor tricycle");
return newOne;
}
else if (type.ToLower() == "truck")
{
Console.Write("Is the truck 4 wheel drive? (y/n) ");
String is4WheelDrive = Console.ReadLine().ToLower();
Vehicle newOne = new Truck(color, make, model, is4WheelDrive == "y");
return newOne;
}
}
return null;
}

// ask the user for a valid input and reutrn it
public static String getUserOption()
{
Console.Write("Choose a command (list, add, delete) ");
return Console.ReadLine();
}

// print the inventory out to the console.
public static void printInventory(List<Vehicle> inventory)
{
// if the inventory is empty, we print a message letting them know that
// and exit the function
if(inventory.Count == 0){
Console.WriteLine("You dont have any inventory");
return;
}
// we start at position 1, so the inventory has nice numbers
// we should remeber that the user sees the numbers starting as 1,
// so when asking for item to delete, we need to automatically
// handle that the index into the list starts at 0.
int index = 1;
// loop through the inventory and print it to the console
foreach (Vehicle item in inventory)
{
Console.WriteLine("{0} - {1}", index, item);
index++;
}
}
}

// abstract vehicle class, cannot be instantiated
public abstract class Vehicle{
String make;
String model;
String color;
protected int numWheels;

public Vehicle(String color, String make, String model, int numWheels){
this.color = color;
this.make = make;
this.model = model;
this.numWheels = numWheels;
}
public virtual int changeWheels()
{
return numWheels;
}

// overiding the ToString method from the base object class
override
public String ToString(){
//gets current class type, converts it to a string then uses linq to split it at the . is Inheritence.class, prints the last part of the split, then adds a formated string with color make and model.
String formated = this.GetType().ToString().Split('.').Last() + String.Format(", {0}, {1}, {2}", color, make, model);
return formated;
}
}

// extending the Vehicle class with a car subclass
public class Car: Vehicle{
bool isHatchback;

// calling the base constructor in vehicle
public Car(String color, String make, String model, bool isHatchback):base(color, make, model, 4){
this.isHatchback = isHatchback;
}
}

// extending the Vehicle class with a motorcycle subclass
public class Motorcycle: Vehicle{
bool isTricycle;

public Motorcycle(String color, String make, String model, bool isTricycle):base(color, make, model, 2){
this.isTricycle = isTricycle;
changeWheels();
}

//changes number of wheels if motorcycle is a three wheeled tricycle
public override int changeWheels(){
if(isTricycle)
{
this.numWheels = 3;
}
else
{
this.numWheels = 2;
}
return numWheels;
}
}
// extending the Vehicle class with a truck subclass
public class Truck: Vehicle{
bool is4WheelDrive;

public Truck(String color, String make, String model, bool is4WheelDrive):base(color, make, model, 4){
this.is4WheelDrive = is4WheelDrive;
}
}
}
8 changes: 8 additions & 0 deletions Inheritance/inheritance.csproj
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<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp2.1</TargetFramework>
</PropertyGroup>

</Project>