Función IsNumber 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()
    {
        // Test the IsNumber function
        if (IsNumber("1234"))
        {
            Console.WriteLine("It is a numerical value");
        }
        else
        {
            Console.WriteLine("It is not a numerical value");
        }

        if (IsNumber("abc"))
        {
            Console.WriteLine("It is a numerical value");
        }
        else
        {
            Console.WriteLine("It is not a numerical value");
        }
    }

    // Function to check if a string is a number
    public static bool IsNumber(string str)
    {
        // Try to parse the string as an integer
        return int.TryParse(str, out _);  // If it can be parsed as an integer, return true, else false
    }
}