C# Interview Questions and Answers for Freshers - 1
What are the access-specifiers available in C#?
What is C#?
C# is a programming language designed by Microsoft. It is loosely based on C/C++, and bears a striking similarity to Java in many ways. Microsoft describes C# as follows.
C# is a simple, modern, object oriented and type safe programming language derived from C and C++. C#(pronounced C sharp) is firmly planted in the C and C++ family tree of languages, and will immediately be familiar to C and C++ programmers. C# aims to combine the high productivity of Visual Basic and the raw power of C++.
Differentiate between value types with reference types?
These data types store their data directly as values in memory.
Numeric Types (int 32, short, single).
Structures (Custom data types based on System.ValueType).
Enumerations(Custom types that represent a defined set of Values).
Boolean, char can be accessed directly.
These data types store reference to another memory location that contains the data.
Can be accessed through the members of the class.
Is C# is object oriented?
Yes, C# is an OO language in the tradition of Java and C++.
What is the difference between const and static readonly?
The difference is that static read only can be modified by the containing class, but const can never be modified and must e initialized to a compile time constant.
To expand on the static read only case a bit, the containing class can only modify it:
in the variable declaration ( through a variable initialize)
in the static constructor (instance constructor if it’s not static)
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