.Floor()

Math.Floor() is a static method that always rounds down and returns the largest whole integer which is less than or equal to the given number.

Math.Floor(x);

• The Math.Floor() method is used to find the largest whole integer which is less than or equal to the argument, x, that is passed in. The argument can be of a float or double type.
• The System namespace is required to access this method.

The following example uses Math.Floor() to return the largest whole number.

// Include the System namespace
using System;

public class Floor {
    public static void Main() {
        Console.WriteLine(Math.Floor(5.05));
    }
}

The example will result in the following output:

5