CSharp - Write program to Round down/up, Round to hundreds

  1. HOME
  2. CSharp
  3. Essential Types
  4. Math Type

Requirements

You will round to dollars, round to hundreds of dollars, always round down, and always round up.

Hint

Demo

using System;
class Program{// w  w  w .j  a  va 2  s.  c om
    static void Main(string[] args){
        // Input 
        Console.Write("Enter (decimal) amount in dollars: ");
        string input = Console.ReadLine();
        double amount = Convert.ToDouble(input);

        // To dollars 
        double nearest = Math.Round(amount);

        double alwaysDown = Math.Floor(amount);
        double alwaysUp = Math.Ceiling(amount);

        Console.WriteLine("To dollars");
        Console.WriteLine("Nearest     : " + nearest);
        Console.WriteLine("Always down: " + alwaysDown);
        Console.WriteLine("Always up   : " + alwaysUp);

        // To cents 
        nearest = Math.Round(amount, 2);
        alwaysDown = Math.Floor(100 * amount) / 100;
        alwaysUp = Math.Ceiling(100 * amount) / 100;

        Console.WriteLine("To cents");
        Console.WriteLine("Nearest     : " + nearest);
        Console.WriteLine("Always down: " + alwaysDown);
        Console.WriteLine("Always up   : " + alwaysUp);

        // To hundreds of dollars 
        nearest = 100 * Math.Round(amount / 100);
        alwaysDown = 100 * Math.Floor(amount / 100);
        alwaysUp = 100 * Math.Ceiling(amount / 100);

        Console.WriteLine("To hundreds of dollars");
        Console.WriteLine("Nearest     : " + nearest);
        Console.WriteLine("Always down: " + alwaysDown);
        Console.WriteLine("Always up   : " + alwaysUp);

    }
}

Result