Question

How to round up a double value to 2 decimal places in C#

Answer 1

using System;

public class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine(Math.Ceiling(199.183));
        Console.WriteLine(RoundUp(199.183, 2));
    }
    
    public static double RoundUp(double d, int places) {
        double multiplier = Math.Pow(10, Convert.ToDouble(places));
 
        return Math.Ceiling(d * multiplier) / multiplier;
    }
}


/*
run:

200
199.19

*/

 

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Answer 2

using System;

public class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine(Math.Ceiling(199.183));
        Console.WriteLine(Math.Ceiling(199.183 * 100) / 100);
    }
}


/*
run:

200
199.19

*/

 

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Answer 3

using System;

public class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine(Math.Ceiling(199.183));
        Console.WriteLine(0.01 * Math.Ceiling(100 * 199.183));
    }
}


/*
run:

200
199.19

*/

 

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