November 2018 2

What is the difference between an Abstract Class and an Interface?

Abstract Class are a type of class that does not have any implementation. A Abstract class is generally used as a base class. We cannot create any instance of an abstract class.

What is the difference between a structure and a class?

Structure is a value type but class is a reference type. Structures can store the value directory but classes hold the reference of the value you want to store.

What are Generics?

Generics gives us the flexibility to change the value of return types at the run time. We can use <> brackets when declaring the objects. For Example: IList<T> lst =new List<T> where <T> is the return type.

Write a program to reverse a linked list using recursion?

What are the extension methods in CSharp?

Extension methods are used for extending the functionality of a currently existing function which you don’t have access to. Lets say that you have a dll where you want to add your functionality, so in this case you can extent the functionality of the dll using the extension methods. We use this for implementing the extension methods.

What is overriding and overloading?

Overriding is implemented in c sharp using the Virtual and Override keywords, but in case of overloading we change the number of arguments or datatypes.

What are enums?

Write a program to reverse the words in a sentence?

Write a program to create check if the subset adds to the sum of a given number?

What is Threadpooling?

Write a program for implementing singleton pattern?

What is the difference between locks and Monitors in C Sharp?

How to implement custom linked list in c sharp?

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