System:-
It is a namespace. As you know namespace is a logical container of types i.e. Class, Interface, Delegate, Enumeration, Structures, etc.
Console:-
It is a static class under the Framework Class Library of our language which provides a set of members through which we can perform I/O operations.
we can not inherit the console class .so to call the members of this class we need to prefix the class name.
WriteLine:-
WriteLine is a method of class Console. It will display the current output on the monitor with a line break/terminator.
All the members of the console class are static.
WriteLine method have 19 overloads in this class.
So, we write like this:-
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
System.Console.WriteLine();
}
}
}
(or) we can import the System namespace above our code like this
using System; //importing namespace
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine();
}
}
}
>>In System namespace
namespace System
{
public static class Console
{
..........................
..........................
public static void WriteLine();
..........................
..........................
}
}
}
