using System; class Changes { public static void Main() { int cost, change; int num_quarter, num_dime, num_nickel, num_penney; Console.WriteLine("Please input the cost ( 0 ~100 cents)"); cost = int.Parse(Console.ReadLine()); if(cost < 0) return; if(cost > 100) return; change = 100-cost; num_quarter = change/25; num_dime = change%25/10; num_nickel = change%25%10/5; num_penney = change%5; Console.WriteLine("Your change is: " + num_quarter + " quarter(s), " + num_dime + " dime(s), " + num_nickel + " nickel(s), and " + num_penney + " penney(s)."); } }