using System;
using System.Collections.Generic;
using Example.App.Models;
using Example.App.Services;
using Example.App.Utils;
namespace Example.App
{
/// <summary>
/// Main program entry point
/// </summary>
public class Program
{
public static void Main(string[] args)
{
// Create a greeting service
IGreetingService greetingService = new GreetingService();
// Create a user
var user = new User("Alice", Role.Admin);
// Greet the user
string greeting = greetingService.Greet(user);
Console.WriteLine(greeting);
// Use collection utilities
var numbers = new List<int> { 1, 2, 3, 4, 5 };
int sumOfSquares = CollectionHelper.SumOfSquares(numbers);
Console.WriteLine($"Sum of squares: {sumOfSquares}");
// Use file helper
try
{
string firstLine = FileHelper.ReadFirstLine("README.md");
Console.WriteLine($"First line: {firstLine}");
}
catch (Exception ex)
{
Console.WriteLine($"File read failed: {ex.Message}");
}
// Demonstrate nested class
var outer = new OuterClass("outer");
var inner = outer.CreateInner("inner");
Console.WriteLine(inner.Combine());
}
}
}
