The user enters ten numbers.
The program then outputs the greatest.
You can define a variable to store the greatest number "so far."
The greatest variable is set to the least possible value at the beginning to ensure that the first entered number is always greater.
using System; class Program/*from ww w .ja v a 2s. c om*/ { static void Main(string[] args) { // Preparation int greatest = int.MinValue; // Input of ten numbers for (int order = 1; order <= 10; order++) { // Input Console.Write("Enter " + order.ToString() + ". number: "); string input = Console.ReadLine(); int number = Convert.ToInt32(input); // Is it greater than the greatest so far? if (number > greatest) { greatest = number; } } // Output Console.WriteLine("The greatest of entered numbers was: " + greatest.ToString()); } }