C# is a popular programming language that is widely used in the development of Windows-based applications, as well as in web, mobile, and game development. If you are a fresher looking for a job as a C# developer, you may be asked to answer some C# interview questions to assess your knowledge and skills. Here are some common C# interview questions and answers that you can expect in a fresher interview:
What is C#?
C# is a general-purpose programming language developed by Microsoft. It is an object-oriented language that is designed to be simple, modern, and easy to learn. C# is widely used in the development of Windows-based applications, as well as in web, mobile, and game development.
What is the syntax of C#?
The syntax of C# is similar to other C-style languages, such as C++ and Java. It uses curly braces to enclose code blocks, and semicolons to mark the end of a statement. C# also uses a number of keywords, such as “class”, “namespace”, and “using”, to define code elements.
What is an object in C#?
In C#, an object is a data structure that contains data and behavior. It is a self-contained entity that can be manipulated and accessed through methods and properties. An object is created from a class, which is a blueprint that defines the characteristics and behavior of the object.
What is inheritance in C#?
Inheritance is a mechanism in C# that allows a class to inherit the properties and methods of another class. This allows you to create a new class that is a modified version of an existing class, without having to rewrite all the code. Inheritance is a powerful feature of object-oriented programming that allows you to create a hierarchy of classes and reuse code effectively.
What is an interface in C#?
An interface in C# is a blueprint for a class that defines a set of methods and properties that the class must implement. An interface does not contain any implementation details, but rather defines a contract that the implementing class must adhere to. Interfaces are used to define a common set of behaviors that can be shared among multiple classes.
What is a constructor in C#?
A constructor in C# is a special method that is called when an object is created. It is used to initialize the object’s properties and perform other tasks that are necessary for the object to function correctly. A constructor has the same name as the class
and does not have a return type.
What is an exception in C#?
An exception in C# is an error that occurs during the execution of a program. Exceptions are used to handle unexpected events or errors that may occur, such as input/output errors, divide-by-zero errors, or null reference errors. C# has a built-in exception-handling mechanism that allows you to catch and handle exceptions using the “try-catch” block.
What is a delegate in C#?
A delegate in C# is a type that represents a reference to a method. It is used to pass a method as an argument to another method, or to invoke a method dynamically. Delegates are often used in event-driven programming, where they are used to specify the event handler method that will be called when an event occurs.
What is a namespace in C#?
A namespace in C# is a container for a set of related classes and types. It is used to organize and group related code elements, and to prevent naming conflicts. A namespace can be used to create a hierarchy of classes and types, and to specify the scope of a class or type.
What is a struct in C#?
A struct in C# is a value type that represents a lightweight object. It is similar to a class, but it is stored on the stack instead of the heap. Structs are often used to represent simple data structures, such as points, rectangles, and colors.
By preparing for these C# interview questions and practicing your answers, you can increase your chances of success in a C# developer job interview. In addition to these questions, you may also be asked about your experience and projects, as well as your technical skills and problem-solving abilities. With the right preparation and a strong foundation in C#, you can showcase your knowledge and skills and land your dream job as a C# developer.