Main. Abs method in C#

The Math.Abs() method in C# is used to return the absolute value of a specified number in C#. This specified number can be decimal, double, 16-bit signed integer, etc.

Example

using System;
class Demo {
   public static void Main(){
      Double val1 = 30.40;
      Double val2 = Double.MinValue;
      Double val3 = Double.MaxValue;
      Console.WriteLine("Absolute value of {0} : {1}", val1, Math.Abs(val1));
      Console.WriteLine("Absolute value of {0} : {1}", val2, Math.Abs(val2));
      Console.WriteLine("Absolute value of {0} : {1}", val3, Math.Abs(val3));
   }
}

This is used to return a positive value of the specified number. Please find the reference link for the same 

https://www.alphacodingskills.com/cs/notes/cs-math-abs.php