Keywords are the words in a language that are used for some internal process or represent some predefined actions. var is a keyword, it is used to declare an implicit type variable, that specifies the type of a variable based on initial value.
Syntax:
var variable_name = value;
Example:
Input: a = 637 b = -9721087085262 Output: value of a 637, type System.Int32 value of b -9721087085262, type System.Int64 Input: c = 120.23f d = 150.23m e = G f = Geeks Output: value of c 120.23, type System.Single value of d 150.23, type System.Decimal value of e G, type System.Char value of f Geeks, type System.String
Example 1:
// C# program for var keyword using System;
using System.Text;
class GFG {
static void Main( string [] args)
{
var a = 637;
var b = -9721087085262;
// to print their type of variables
Console.WriteLine( "value of a {0}, type {1}" , a, a.GetType());
Console.WriteLine( "value of b {0}, type {1}" , b, b.GetType());
}
} |
Output:
value of a 637, type System.Int32 value of b -9721087085262, type System.Int64
Example 2:
// C# program for var keyword using System;
using System.Text;
namespace Test {
class GFG {
static void Main( string [] args)
{
var c = 120.23f;
var d = 150.23m;
var e = 'G' ;
var f = "Geeks" ;
// to print their type of variables
Console.WriteLine( "value of c {0}, type {1}" , c, c.GetType());
Console.WriteLine( "value of d {0}, type {1}" , d, d.GetType());
Console.WriteLine( "value of e {0}, type {1}" , e, e.GetType());
Console.WriteLine( "value of f {0}, type {1}" , f, f.GetType());
// hit ENTER to exit
Console.ReadLine();
}
} } |
Output:
value of c 120.23, type System.Single value of d 150.23, type System.Decimal value of e G, type System.Char value of f Geeks, type System.String
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