❔ ✅ Inputing numbers

using System;
namespace hello_wolrd;
class Program
{
    static void Main(string[] args)
    {

        int a = Inputer.ReadSymbol();
        int b = Inputer.ReadSymbol();
        Console.WriteLine(a + b);
    }
}

class Inputer
{
    public static int ReadSymbol()
    {
        int symbol = Console.Read();
        while ((symbol < '0') || (symbol > 9))
            symbol = Console.Read();
        int x = 0;

        while ((symbol >= '0') && (symbol <= '9'))
        {
            x = 10 * x + (symbol - '0');
            symbol = Console.Read();
        }


        return x;
    }
}

115
aaa-12

a