How to round down a floating point number using the Math.Floor function in C#

How to use the Math.Floor function in C# to round down floating point numbers, specific code examples are required

Overview:
In C#, Math The .Floor function can round down floating point numbers. This article will introduce the use of the Math.Floor function and provide specific code examples to help readers better understand the function and usage of the function.

How to use the Math.Floor function:
The Math.Floor function is used to round down a floating point number and return the maximum integer value that is less than or equal to the specified floating point number. The return value type of this function is double. Its declaration is as follows:

public static double Floor (double d);

Code example:
Next, we will demonstrate how to use the Math.Floor function through a specific code example Round down floating point numbers.

using System;

class Program
{
    static void Main()
    {
        double num1 = 3.14;
        double num2 = 9.99;
        double num3 = -2.75;

        double result1 = Math.Floor(num1);    // 3.0
        double result2 = Math.Floor(num2);    // 9.0
        double result3 = Math.Floor(num3);    // -3.0

        Console.WriteLine("Result 1: " + result1);
        Console.WriteLine("Result 2: " + result2);
        Console.WriteLine("Result 3: " + result3);
    }
}

Explanation:
The above code first introduces the System namespace, which contains the Math class. Then three floating point variables num1, num2 and num3 are defined and assigned corresponding values. Next, use the Math.Floor function to round down these three floating point numbers and save the results in the corresponding result variables result1, result2 and result3 middle. Finally, the results are printed to the console through the Console.WriteLine function.

Running results:
Run the above code, the output results are as follows:

Result 1: 3
Result 2: 9
Result 3: -3

Summary:
This article introduces the use of Math.Floor function in C# to round down floating point numbers. methods, and relevant code examples are given. By studying this article, readers can better understand the functions and usage of the Math.Floor function, and be able to flexibly use this function in actual development.

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