L04-02 Determináns

using System;

namespace SzTFLabor04
{
    class Program
    {
        static void Matrix_Ki(ref int[,] mat)
        {
            for (int j = 0; j < 2; j++)
            {
                Console.Write("|");
                for (int i = 0; i < 2; i++)
                {
                    Console.Write(mat[j,i]);
                    if (i == 0)
                    {
                        Console.Write(" ");
                    }
                }
                Console.WriteLine("|");
            }

        }

        static int detM(ref int[,] mat)
        {
            return mat[0, 0] * mat[1, 1] - mat[0,1]*mat[1,0];
        }

        static void Main(string[] args)
        {
            Console.ForegroundColor = ConsoleColor.Black;
            Console.BackgroundColor = ConsoleColor.White;
            Console.Title = "SzTFLabor";
            Console.Clear();

            int[,] M = new int[2,2];

            for (int i = 0; i < 4; i++)
            {
                Console.Write($"{i}. elem: ");
                int a = int.Parse(Console.ReadLine());
                M[i / 2,i % 2] = a;
            }

            Matrix_Ki(ref M);
            Console.Write(detM(ref M));


        }
    }
}