5.6

using System;

namespace FifthProject
{
    class Program
    {
        static void Main(string[] args)
        {
            Gladiator[] gladiators = new Gladiator[5];
            Arena arena = new Arena();

            arena.AddGladiators(gladiators);
            arena.SelectGladiators(gladiators);
            arena.Fight(gladiators);
            Console.ReadKey();
        }
    }

    class Gladiator
    {
        public int Health { get; set; }
        public int Damage { get; set; }
        public int Armor { get; set; }

        public Gladiator(int health, int damage, int armor)
        {
            Health = health;
            Damage = damage;
            Armor = armor;
        }
    }

    class Arena
    {
        private int _firstGladiator;
        private int _secondGladiator;

        private void ShowGladiators(Gladiator[] gladiators)
        {
            for (int i = 0; i < gladiators.Length; i++)
            {
                Console.WriteLine($"{i+1}. Здоровье: {gladiators[i].Health}. Урон: {gladiators[i].Damage}. Коэф-нт брони: {gladiators[i].Armor}");
            }
        }

        public void AddGladiators(Gladiator[] gladiators)
        {
            for (int i = 0; i < gladiators.Length; i++)
            {
                Console.WriteLine($"Здоровье гладиатора номер {i + 1}");
                int health = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine($"Урон гладиатора номер {i + 1}");
                int damage = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine($"Броня(0-100) гладиатора номер {i + 1}");
                int armor = Convert.ToInt32(Console.ReadLine());
                gladiators[i] = new Gladiator(health, damage, armor);
            }
        }

        public void SelectGladiators(Gladiator[] gladiators)
        {
            ShowGladiators(gladiators);
            Console.WriteLine("Выберите первого гладиатора");
            _firstGladiator = Convert.ToInt32(Console.ReadLine()) - 1;
            Console.WriteLine("Выберите второго гладиатора");
            _secondGladiator = Convert.ToInt32(Console.ReadLine()) - 1;
        }

        public void ShowActiveGladiators(Gladiator[] gladiators, int firstGladiator, int secondGladiator)
        {
            Console.WriteLine($"Здоровье: {gladiators[firstGladiator].Health}\n" +
                              $"Здоровье:{gladiators[secondGladiator].Health}");
        }

        public void TakeDamage(Gladiator[] gladiators, int firstGladiators, int secondGladiators)
        {
            gladiators[firstGladiators].Health -=
                gladiators[secondGladiators].Damage * gladiators[firstGladiators].Armor / 100;
            gladiators[secondGladiators].Health -=
                gladiators[firstGladiators].Damage * gladiators[secondGladiators].Armor / 100;
        }

        public void Fight(Gladiator[] gladiators)
        {
            bool fight = true;
            while (fight)
            {
                ShowActiveGladiators(gladiators, _firstGladiator, _secondGladiator);
                TakeDamage(gladiators, _firstGladiator, _secondGladiator);
                if (gladiators[_firstGladiator].Health <= 0 && gladiators[_secondGladiator].Health <= 0)
                {
                    Console.WriteLine("Ничья");
                }
                else if (gladiators[_firstGladiator].Health <= 0)
                {
                    Console.WriteLine("Победа второго гладиатора");
                    fight = false;
                }
                else if (gladiators[_secondGladiator].Health <= 0)
                {
                    Console.WriteLine("Победа первого бойца");
                    fight = false;
                }

                Console.WriteLine("");
            }
        }
    }
}