Code: using System; using System.Collections.Generic; using System.Text; namespace greatestno { class Program { static void Main(string[] args) { int num1, num2, num3; Console.WriteLine("Enter the num1"); num1=Int32.Parse(Console.ReadLine()); Console.WriteLine("Enter the num2"); num2 = Int32.Parse(Console.ReadLine()); Console.WriteLine("Enter the num1"); num3 = Int32.Parse(Console.ReadLine()); if (num1 >num2) if (num1 > num3) Console.WriteLine("Num1 is the greatest no. :"); else Console.WriteLine("Num3 is the greatest no. :"); else if (num2 > num3) Console.WriteLine("Num2 is the greatest no. :"); else Console.WriteLine("Num3 is the greatest no. :"); Console.ReadLine(); } } }