Basic Syntax

Let’s learn the basic syntax of C# by following a simple “Hello World” example.
using System;

namespace HelloWorld
  class Program
    static void Main(string[] args)
      Console.WriteLine("Hello World!");  


Hello World!

  1. using System;: This line allows us to use classes from the System namespace.
  2. namespace HelloWorld: Namespaces organize your code and act as containers for classes and other namespaces.
  3. class Program: A class is a container for data and methods, providing functionality to your program. Every line of C# code must be inside a class.
  4. static void Main(string[] args): The Main method is where your program starts executing. Any code inside its curly braces {} will be executed.
  5. Console.WriteLine(“Hello World!”);: This line uses the Console class from the System namespace to output “Hello World!”.

Remember these key points:

  • Every C# statement ends with a semicolon ;.
  • C# is case-sensitive, so “MyClass” and “myclass” have different meanings.
  • The name of the C# file doesn’t have to match the class name, but it often does for better organization.
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