type inference

C# is strongly typed and default; data type declaration is an explicit type.

C# 3.0 introduced “var” keyword to declare implicit types. Purpose of var keyword is used to store any type in a variable. Once implicit type declare, compiler know the type of the variable after you cannot assign any other data type to that variable.

Syntax:

var str = "Sample";

Now if we assign integer value to name variable as like below:

str = 33;

It gives an error message: “Cannot implicitly convert type 'int' to 'string'”.