What is the usage of ‘var’ in C#?

In C#, the var keyword is used to declare implicitly typed variables. It can automatically infer the type of the variable based on the value it is initialized with.

The syntax for declaring variables using the var keyword is as follows:

Declare a variable called variableName and assign an initial value to it.

For example,

Variable age is inferred to be of type int.
Variable name is inferred to be of type string.

The use of the var keyword can simplify code, especially when the type of variable is long or complex. It also increases the flexibility of the code, as the type of variable can adapt automatically based on the initialized value.

It is important to note that once a variable is declared using the var keyword, its type becomes fixed and cannot be assigned a different type of value. Therefore, var should be used cautiously to ensure the readability and maintainability of the code.