code C# in dãy số fibinacci

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace bt5_for__fibonacci_ { class Program { static void Main(string[] args) { int i, j, k, dem,m; Console.WriteLine("day fibonacci"); i = 1; j = 1; k = 2; dem = 3; m = 20; for (dem = 3; dem <= m; dem++) { k = i + j; i = j; j = k; Console.Write("{0}\t", k); if (dem == 4 ||dem==8) Console.WriteLine(); } Console.ReadKey(); } } } . using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace bt5_for__fibonacci_. bt5_for__fibonacci_ { class Program { static void Main(string[] args) { int i, j, k, dem,m; Console.WriteLine("day fibonacci"); i = 1; j = 1; k =