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C# Printing On Console

using System;
namespace application
{
    class Program
    { 
        static void Main(string[] args) 
        {
            Console.WriteLine("Rem01x");
        }    
    }
}

C# Single-Line Comment

using System;
namespace application
{
    class Program
    { 
        static void Main(string[] args) 
        {
            //I'm Comment
            Console.WriteLine("Rem01x");
        }    
    }
}

C# Multi-Line Comment

using System;
namespace application
{
    class Program
    { 
        static void Main(string[] args) 
        {
            /*
             Hello
             I'm
             Multi-Line
             Comment
             */
            Console.WriteLine("Rem01x");
        }    
    }
}

C# Variables

using System;
using System.Security.Cryptography;
namespace application
{
    class Program
    { 
        static void Main(string[] args) 
        {
            int age = 20;
            string name = "Rem01x";
            Console.WriteLine(age);
            Console.WriteLine(name);
        }    
    }
}

C# Regular Concatenation

using System;
using System.Security.Cryptography;
namespace application
{
    class Program
    { 
        static void Main(string[] args) 
        {
            string Fname = "Ramez";
            string Lname = "Saber";
            string FullName = Fname + " " + Lname;
            Console.WriteLine(FullName);
        }    
    }
}

C# String Interpolation

using System;
using System.Security.Cryptography;
namespace application
{
    class Program
    { 
        static void Main(string[] args) 
        {
            string Fname = "Ramez";
            string Lname = "Saber";
            Console.WriteLine($"{Fname} {Lname}");
        }    
    }
}

C# Var Keyword