c# oops interview questions and answers pdf

C# oops interview questions and answers pdf

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Most Asked C# Interview Questions

Top 50 C# Interview Questions and Answers for 2021

C# OOPS Interview Questions & Answers

OOP is, by far, the most common programming paradigm used in the IT industry. All the major programming languages now support OOP including C. OOP reflects the real world behavior of how things work and the most efficient way to model and organize very large applications.

Most Asked C# Interview Questions

By Priya Pedamkar. C is an Object-Oriented, functional, generic and component-oriented programming language. It is used to build a variety of applications, it is specifically strong at building Windows desktop applications and games. Web development can also be done efficiently with C and it has increasingly become popular for mobile developments. So, it makes an excellent choice for any programmer who wishes to do web and game development. It is a statically-typed language, so written source code is thoroughly checked before it turns into an application.

It is a complex language to learn and mastering it can take a substantial amount of time. There are various cross-platform tools available which allow applications written in C which can be used over mobile and desktop. Though every interview is different and the scope of a job is also different, we can help you out with the top C OOP Interview Questions with answers, which will help you take the leap and get you success in your interview. Below are the top C OOP Interview Questions that are asked frequently in an interview these top questions are divided into two parts are as follows:.

Answer: A delegate Object is a reference type variable that use to holds the reference to a method. The reference can be changed at runtime which is held by an object of a delegate. Delegates are especially used for implementing events and the call-back methods. All delegates are implicitly derived from the System. Delegate class. Answer: In Compile time polymorphism or Early Binding, we will use multiple methods with the same name but a different type of parameter or maybe the number or parameter because of this we can perform different-different tasks with same method name in the same class which is also known as Method overloading.

Here, the method name and the method signature number of parameters and parameter type must be the same and may have a different implementation. Method overriding is an example of dynamic polymorphism. WriteLine "For testInterface1!! WriteLine "For testInterface2!! What are the different ways a method can be overloaded? Answer: Method overloading is another name for compile-time polymorphism, where we can create a method with the same name but with a different signature.

It is done at compile time and we can do it multiple ways but method name would remain the same. A number of parameters can be different. Type of parameter can be different. Order of parameter can be different.

Answer: Access modifiers are keywords used to specify the declared accessibility of a member or a type. In C there are 5 several types of Access Modifiers.

Public — No restrictions on accessing public members. Private — limited access within a class definition, if none is specified then this is the default. Protected — access is limited to within class definition and any class that inherits from the class. Internal — access is limited exclusively to the classes defined by the current project Protected internal — member can be accessed anywhere in the same assembly and also accessible by inheriting that class, it can be accessible outside the assembly in derived class only.

Answer: A virtual method is a method that can be redefined in derived classes. A virtual method has an implementation in a base class as well as derived from the class. A virtual method is created in the base class that can be overridden in the derived class. We create a virtual method in the base class using the virtual keyword and that method is overridden in the derived class using the override keyword.

When a virtual method is invoked, the run-time type of the object is checked for an overriding member. The overriding member in the most derived class is called, which might be the original member if no derived class has overridden the member.

By default, methods are non-virtual. Answer: Null is not an object. We might come across a piece of code that contains many conditional statements that would check if the value of a variable is NULL. This code is fine, and convert to the upper case a given string.

But from an OO perspective, consider constructing an object that represents nothing, rather than evaluating it for NULL. An extension method is a special kind of static method, but they are called as if they were instance methods on the extended type. This method enables you to add methods to existing types without creating a new derived type, recompiling, or otherwise modifying the original type.

Extension methods are only in scope when you explicitly import the namespace into your source code with a using directive. And static members exist without any instance of the class and call with the name of the class, not by instance. Here we have listed the most useful 10 interview sets of questions so that the jobseeker can crack the interview with ease.

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Top 50 C# Interview Questions and Answers for 2021

Hi friends here are some very important OOPS interview questions answers with user friendly format. And the best thing is that all examples Page Home. Top Ads. Life Style. And the best thing is that all examples represented with screen shots. This will help you to understand oops concept.

Here areexampleswithscreenshots. Ifwemake theobjectofchildclassthenwhichclasscounstructorcalledfirst? JqueryInterviewQuestions Answers www. CreateProcedurein5minut completedatabase www. Ifwehaveanabstractmethodinbaseclass,thenwemustneedtooverride orusenew keyword itornot?

Question 1. OOPS works on the objects. Everything in OOPS is object. Object is made up of states and behaviors. Objects communicate with each other by sending messages to each other. Object hierarchy are built using Aggregation and Composition.


This is a list of the top 50 C# interview questions and answers for C# C# supports modern object-oriented programming language features.


C# OOPS Interview Questions & Answers

Oops is a concept or methodology which is use to write computer programes by using class and object. Oops stands for object oriented programming its a example of programming language which deals with, object and its interaction to develop computer Applications and program. Object Oriented Programming System is a mechanism to write a computer program by using class and Object. The Object Oriented Programming System is providing 4 principles like 1. Encapsulation 2.

Encapsulation : It is the mechanism that binds together code and data in manipulates, and keeps both safe from outside interference and misuse. In short it isolates a particular code and data from all other codes and data. A well-defined interface controls the access to that particular code and data. Inheritance : It is the process by which one object acquires the properties of another object.

Top 10 C# / .NET OOPS Interview Questions and Answers

By Priya Pedamkar. C is an Object-Oriented, functional, generic and component-oriented programming language. It is used to build a variety of applications, it is specifically strong at building Windows desktop applications and games.

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2 comments

  • Claudia W. 11.11.2020 at 01:13

    20 C# OOPS interview questions and answers · Q What will be the output of the following code snippet? · Q Which of the following keyword, enables to modify.

    Reply
  • Renee T. 12.11.2020 at 21:56

    Looking for jobs in C Oops?

    Reply

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