Practicum7-IV-5

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

namespace ConsoleApp2
{
    class Program
    {

        static void Main()
        {
            int k=0;
            Console.Write("Please enter the n=");
            int n = int.Parse(Console.ReadLine());
            int[,] a=new int [n,n];
            for(int i=0;i<a.GetLength(0);i++)
            {
                for (int j = 0; j < a.GetLength(1); j++)
                {
                    a[i, j] = int.Parse(Console.ReadLine());
                }
            }
            int min = a.GetLength(0) < a.GetLength(1) ? a.GetLength(0) : a.GetLength(1);
            int z = 0, l = a.GetLength(0) - 1;
            for (int i = min - 1; i >= 0; i--, z++, l--)
            {
                k = a[i, i];
                a[i, i] = a[l, z];
                a[l, z] = k;
            }
            for (int i = 0; i < a.GetLength(0); i++)
            {
                for (int j = 0; j < a.GetLength(1); j++)
                    Console.Write(a[i, j] + "\t");
                Console.WriteLine();
            }
        }
    }
}