Exam preparation C# Find bug

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

 

namespace ConsoleApplication1

{

//Exam Practice1 Bug fix

class
Program

{

static
void Main(string[] args)

{

//*Bug* Change to create parent array

//tomykid[] a = new tomykid[3];

 

animal[] a = new
animal[3];

dog d = new
dog("tomy");

tomy t = new
tomy("tomy", "white");

tomykid tk = new
tomykid("tomykid","black");

 

//*Bug* Change to be assigned children objects to parent array

//a[0] = (tomykid)d;

//a[1] = (tomykid)t;

//a[2] = tk;

 

a[0] = (animal)d;

a[1] = (animal)t;

a[2] = (animal)tk;

 

//*Bug* Change from for to foreach

//for(tomykid k:a)

//{

//Console.WriteLine(k.size()+k.bark());

//}

 

foreach (animal ani in a)

{

ani.size();

ani.bark();

}

 

}

}

public
interface
animal

{

//*Bug* Remove interface cannot contain fields

//int i = 10;

 

void bark();

 

//*Bug* Add method size()

void size();

}

public
class
dog : animal

{

private
string name;

 

//*Bug* Add virtual

virtual
public
void bark()

{

Console.WriteLine("dog barks");

}

 

//*Bug* Add virtual

virtual
public
void size()

{

Console.WriteLine("size unknown");

}

 

public dog(string i)

{

name = i;

}

 

}

public
class
tomy : dog

{

string color;

 

//*Bug* Add override

override
public
void bark()

{

Console.WriteLine("Tomy barks");

}

 

//*Bug* Add override

override
public
void size()

{

Console.WriteLine("small size");

}

 

public tomy(string name, string color)

: base(name)

{

this.color = color;

}

 

}

public
class
tomykid : tomy

{

string haircolor;

 

//*Bug* Add override

override
public
void bark()

{

Console.WriteLine("tomykid barks");

}

 

//*Bug* Add override

override
public
void size()

{

Console.WriteLine("medium size");

}

 

//*Bug* Add :base(color)

public tomykid(string name,string color)

: base(name,color)

{

haircolor = color;

}

}

}