C# is a programming language that has been rapidly growing and is being intensively used. It can be used for a number of operating systems such as Windows, iOS, Android, etc. C# is a simple, modern and object-oriented language. Some of the particular syntax used in C# are semicolons, curly brackets, variables (two variable are assigned with the help of an equal sign) and square brackets.
It has a number of advantage and is very user-friendly which makes it one of the most used programming languages in the IT firms. Thus, a number of multinational companies these days are looking for individuals to help them grow in their organization. Thus, such companies ask a diverse range of C# interview questions to not only freshers but also experienced individuals wishing to display their talent and knowledge in the field of C# programming. Here are some important C# interview questions that will not only give you a basic idea of the field but also help to clear the interview.
C# is a programming language which is object-oriented developed by Microsoft. C# is designed and fabricated for a Common Language Infrastructure that constitutes an executable code and runtime, which allows the usage of different high – end languages for different platforms and design.
A class is an example of properties and techniques that utilize and characterize a continuous substance. It can represent information that unites each illustration into a single component. An Object is a sub-occurrence of a Class. In fact, it is only a square of memory assigned that can be put away as Variables, Array or a Collection.
The fundamentals of an OOP concept are:
The four types of classes in C# are:
Abstraction is the process that is used to highlight an important feature of the class that can hide the irrelevant information.
For example – A driver of a car ought to know the details of the car such as its brand name, color, gear, brake, etc. However, the information that is not of importance to him are details of the car such as the exhaust system, internal engine, etc. Thus, the process of abstraction helps in identification and extraction of the information that is relevant to the user and not needed from the outside world. A number of parameters such as with the usage of “private” keyword can help in hiding internal information.
Polymorphism is the process when the same method is applied using different implementation techniques. Polymorphism is of two types:
Compile time polymorphism: when an operator is overloaded.
Runtime polymorphism: when an operator is overridden
For example – If a particular class has Void Add (), then polymorphism can be accomplished by the overload technique, then the Void Add() becomes Void Add(int a, int b) and Void Add(int add).
Some examples of I/O classes are:
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