int x 3; /* This is a comment that spans two lines */

Type Basics

A type defines the blueprint for a value.We also declared a variable of type int whose name was x.

static void Main()

1ntx12 30;

Console.WriteLine (x);

A variable denotes a storage location that can contain different values over time.Tolipper();

Console.Writeline (upperMessage);

// HELLO WORLD

int x 2012;

message= message + x.ToString();

// Hello world2012

Console.WriteLine (message);

The predefined bool type has exactly two possible values: true and faise.The string type represents a sequence of characters, such as NET or "http://oreilly.com. We can work with strings by calling functions on them as follows:

string message "Hello world";

string upperMessage message.For example: