Función calculadora, parámetros de Main Ejercicio C# - Curso de Programación C# (C Sharp)

// Import the System namespace to use basic classes like Console
using System;

class Program
{
    // Main method to drive the program
    public static void Main(string[] args)
    {
        // Check if the correct number of arguments (3) are passed
        if (args.Length != 3)
        {
            Console.WriteLine("Error: Please provide two numbers and an operator.");
            return;
        }

        // Parse the first number and operator from the command line arguments
        double num1 = double.Parse(args[0]);
        string operatorSign = args[1];
        double num2 = double.Parse(args[2]);

        // Perform the calculation based on the operator
        double result = 0;
        bool validOperation = true;

        // Switch statement to handle different operations
        switch (operatorSign)
        {
            case "+":
                result = num1 + num2;
                break;
            case "-":
                result = num1 - num2;
                break;
            case "*":
            case "x": // Allow 'x' as multiplication sign
                result = num1 * num2;
                break;
            case "/":
                if (num2 == 0)
                {
                    Console.WriteLine("Error: Cannot divide by zero.");
                    validOperation = false;
                }
                else
                {
                    result = num1 / num2;
                }
                break;
            default:
                Console.WriteLine("Error: Invalid operator. Use +, -, *, x, or /.");
                validOperation = false;
                break;
        }

        // Output the result if the operation is valid
        if (validOperation)
        {
            Console.WriteLine($"Result: {result}");
        }
    }
}