The var Keyword

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The var Keyword

The var Keyword

var lets the compiler infer a variable's type from its initializer at compile time. The variable is still statically typed — var is not dynamic typing, it's just a shorthand for the programmer. It must always be initialized on the same line it is declared.

Warning: var x; without an initializer is a compile error — the compiler has nothing to infer the type from.

Example: The var Keyword

markup

using System;

class Program
{
    static void Main(string[] args)
    {
        var count = 10;
        var name = "Alice";
        var price = 19.99;

        Console.WriteLine(count.GetType());
        Console.WriteLine(name.GetType());
        Console.WriteLine(price.GetType());
    }
}

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The var Keyword
int, float, double, decimal
The bool Type
The char Type
The string Type
const Fields
Type Conversion

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The var Keyword

The var Keyword

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