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Variables in C#

You declare variables in C# using the following syntax: datatype identifier; For example: int i; This statement declares an int named i. The compiler won’t actually let you use this variable in an expression until you have initialized it with a value. Variables represent storage locations. Every variable has a type that determines what values can be stored in the variable. C# is a type-safe language, and the C# compiler guarantees that values stored in variables are always of the appropriate type. The value of a variable can be changed through assignment or through use of the ++ and -- operators. C# defines seven categories of variables: static variables, instance variables, array elements, value parameters, reference parameters, output parameters, and local variables. A variable is nothing but a name given to a storage area that our programs can manipulate. Each variable in C# has a specific type, which determines the size and layout of the variable's memory; the range of values that can be stored within that memory; and the set of operations that can be applied to the variable.

C# also allows defining other value types of variable like enum and reference types of variables like class,

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