1. Переменные

using System;

namespace HomeWork
{
    public class Program
    {
        static void Main(string[] args)
        {
            int numberOfUsers = 10;
            double waterTemperature = 36.6;
            string userName = "Alexey";
            bool isUserOnline = true;
            char initialLetter = 'A';
            string password = "1234567";
            int numberOfCoins = 100;
            decimal accountBalance = 1500.75m;
            bool isJump = false;
            float speedOfMovement = 10.5f;
        }
    }
}