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C# program to demonstrate the use of Round() method of Math class

Here, we are going to demonstrate use of Round() method of Math class in C#.Net.
Submitted by Nidhi, on April 15, 2021

Here, we will learn about the Round() method of Math class. This method is used to round off floating-point numbers to the nearest integer value. This method is overloaded 8 times.

Syntax:

    Decimal     Math.Round(Decimal)
    Double      Math.Round(Double)
    Decimal     Math.Round(Decimal, Int32)
    Decimal     Math.Round(Decimal, MidpointRounding)
    Double      Math.Round(Double, Int32)
    Double      Math.Round(Double, MidpointRounding)
    Decimal     Math.Round(Decimal, Int32, MidpointRounding)
    Double      Math.Round(Double, Int32, MidpointRounding)

Parameter:

Here we passed double and decimal values to round off given value according to the overloaded method.

Return value:

This method returns double or decimal values according to the overloaded method.

Program:

The source code to demonstrate the use of Round() method of Math class is given below. The given program is compiled and executed successfully.

using System;
class Sample
{
    //Entry point of Program
    static public void Main()
    {
        double val = 0.0;
        decimal decVal = 0.0M;

        Console.WriteLine("Demonstration of Round Method: ");
        val = Math.Round(2.4);
        Console.WriteLine("Value : "+val);

        val = Math.Round(2.5);
        Console.WriteLine("Value : " + val);

        val = Math.Round(2.6);
        Console.WriteLine("Value : " + val);

        val = Math.Round(2.4567,2);
        Console.WriteLine("Value : " + val);

        val = Math.Round(2.4567, 3);
        Console.WriteLine("Value : " + val);

        decVal = Math.Round(2.4567M, 2);
        Console.WriteLine("Decimal Value : " + decVal);

        decVal = Math.Round(2.4567M,MidpointRounding.AwayFromZero);
        Console.WriteLine("Decimal Value : " + decVal);
    }
}

Output:

Demonstration of Round Method:
Value : 2
Value : 2
Value : 3
Value : 2.46
Value : 2.457
Decimal Value : 2.46
Decimal Value : 2
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