methods_ex_04_password_validator

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _04_pass_validator
{
    class Program
    {
        static void Main(string[] args)//100/100
        {
            string password = Console.ReadLine();//input word

            if (CheckIfIsLongEnough(password)  + CheckIfItsOnlyLettersAndSymbols(password) + CheckIfItsAtLeastTwoDigits(password) == 3)
            {
                Console.WriteLine("Password is valid");
            }


        }

        static int CheckIfIsLongEnough(string password)//check for lenght of input
        {
            int control = 1;
            int counter = 0;

            for (int i = 0; i < password.Length; i++)
            {
                counter++;
            }
            if (counter < 6 || counter > 10)//not long enough
            {
                Console.WriteLine("Password must be between 6 and 10 characters");
                return control = 0;
            }
            else
            {
                return control;//long enough, return 1
            }
        }






        static int CheckIfItsOnlyLettersAndSymbols(string password)//check only letters and symbols
        {
            int control = 1;

            foreach (var symbol in password)
            {
                if (symbol < 48 || (symbol > 57 && symbol < 65) || (symbol > 90 && symbol < 97) || symbol > 122)//check ascii table
                {
                    Console.WriteLine("Password must consist only of letters and digits");
                    return control = 0;
                }
            }
            return control;//return 1
        }
        static int CheckIfItsAtLeastTwoDigits(string password)
        {
            int counter = 0;
            int control = 1;
            for (int i = 0; i < password.Length; i++)
            {
                if (password[i] == 48 || password[i] == 49 || password[i] == 50 || password[i] == 51 || password[i] == 52 || password[i] == 53 || password[i] == 54 || password[i] == 55 || password[i] == 56 || password[i] == 57)
                {
                    counter++;
                }
            }
            if (counter < 2)
            {
                Console.WriteLine("Password must have at least 2 digits");
                return control = 0;
            }
            else
            {
                return control;
            }






        }
    }
}