Hello world

using System;

namespace HelloWorldApp
{
    class Program
    {
        static void Main(string[] args)
        {
            // Define personal information
            string fullName = "Hung Vo";
            string nickName = "minhhungit";
            
            // Display greetings and introduction
            Console.WriteLine("Hello, World!");
            Console.WriteLine($"My name is {fullName}.");
            Console.WriteLine($"You can call me {nickName}.");
            Console.WriteLine("Nice to meet you!");
        }
    }
}