What is the main difference between sub-procedure and function?

The sub-procedure is a block of multiple visual basic statements within Sub and End Sub statements. It is used to perform certain tasks, such as changing properties of objects, receiving or processing data, and displaying an output. You can define a sub-procedure anywhere in a program, such as in modules, structures, and classes. We can also provide arguments in a sub-procedure; however, it does not return a new value. The function is also a set of statements within the Function and End Function statements. It is similar to sub-procedure and performs the same task. The main difference between a function … Click here to continue…..

What are the different types of literals?

A literal is a textual representation of a particular value of a type. The different types of literals in Visual Basic are: Boolean Literals – Refers to the True and False literals that map to the true and false state, respectively. Integer Literals – Refers to literals that can be decimal (base 10), hexadecimal (base 16), or octal (base 8). Floating-Point Literals – Refers to an integer literal followed by an optional decimal point By default, a floating-point literal is of type Double. String Literals – Refers to a sequence of zero or more Unicode characters beginning and ending with … Click here to continue…..

Briefly explain the characteristics of reference-type variables that are supported in the C# programming language.

The variables that are based on reference types store references to the actual data. The keywords that are used to declare reference types are: Class – Refers to the primary building block for the programs, which is used to encapsulate variables and methods into a single unit. Interface – Contains only the signatures of methods, properties, events, or indexers. Delegate – Refers to a reference type that is used to encapsulate a named or anonymous method.

What is a parameter? Explain the new types of parameters introduced in C# 4.0.

A parameter is a special kind of variable, which is used in a function to provide a piece of information or input to a caller function. These inputs are called arguments. In C#, the different types of parameters are as follows: Value type – Refers that you do not need to provide any keyword with a parameter. Reference type – Refers that you need to mention the ref keyword with a parameter. Output type – Refers that you need to mention the out keyword with a parameter. Optional parameter – Refers to the new parameter introduced in C# 4.0. It … Click here to continue…..

Briefly explain the characteristics of value-type variables that are supported in the C# programming language.

The variables that are based on value types directly contain values. The characteristics of value-type variables that are supported in C# programming language are as follows: All value-type variables derive implicitly from the System.ValueType class You cannot derive any new type from a value type Value types have an implicit default constructor that initializes the default value of that type The value type consists of two main categories: Structs – Summarizes small groups of related variables. Enumerations – Consists of a set of named constants.