C# 数学（它对开发人员的工作原理）

using System;
public class Program
{
//public static void Main method
    public static void Main()
    {
        // Your code goes here
    }
}

Imports System
Public Class Program
'public static void Main method
	Public Shared Sub Main()
		' Your code goes here
	End Sub
End Class

double val = -10.5;
double absValue = Math.Abs(val); //function returns absolute value
Console.WriteLine(absValue); // Output: 10.5

Dim val As Double = -10.5
Dim absValue As Double = Math.Abs(val) 'function returns absolute value
Console.WriteLine(absValue) ' Output: 10.5

double value = 16;
double sqrtValue = Math.Sqrt(value);
Console.WriteLine(sqrtValue); // Output: 4

Dim value As Double = 16
Dim sqrtValue As Double = Math.Sqrt(value)
Console.WriteLine(sqrtValue) ' Output: 4

double value = 10.75;
double roundedValue = Math.Round(value); // rounds to the nearest whole number
Console.WriteLine(roundedValue); // Output: 11

Dim value As Double = 10.75
Dim roundedValue As Double = Math.Round(value) ' rounds to the nearest whole number
Console.WriteLine(roundedValue) ' Output: 11

double angle = Math.PI / 2; // 90 degrees
double sineValue = Math.Sin(angle);
Console.WriteLine(sineValue); // Output: 1

Dim angle As Double = Math.PI / 2 ' 90 degrees
Dim sineValue As Double = Math.Sin(angle)
Console.WriteLine(sineValue) ' Output: 1

double value = 1;
double hyperbolicSine = Math.Sinh(value);
double hyperbolicCosine = Math.Cosh(value);
double hyperbolicTangent = Math.Tanh(value);

Dim value As Double = 1
Dim hyperbolicSine As Double = Math.Sinh(value)
Dim hyperbolicCosine As Double = Math.Cosh(value)
Dim hyperbolicTangent As Double = Math.Tanh(value)

double baseNum = 2;
double exponent = 3;
double result = Math.Pow(baseNum, exponent);
Console.WriteLine(result); // Output: 8

Dim baseNum As Double = 2
Dim exponent As Double = 3
Dim result As Double = Math.Pow(baseNum, exponent)
Console.WriteLine(result) ' Output: 8

double value = 10;
double naturalLog = Math.Log(value); // Natural logarithmic base
double logBase10 = Math.Log(value, 10); // Base 10 logarithm

Dim value As Double = 10
Dim naturalLog As Double = Math.Log(value) ' Natural logarithmic base
Dim logBase10 As Double = Math.Log(value, 10) ' Base 10 logarithm

using System.Numerics;
Complex complexNumber = new Complex(2, 3); // Represents 2 + 3i

Imports System.Numerics
Private complexNumber As New Complex(2, 3) ' Represents 2 + 3i

double value = 10.99;
int intValue = Convert.ToInt32(value);
Console.WriteLine(intValue); // Output: 10

Dim value As Double = 10.99
Dim intValue As Integer = Convert.ToInt32(value)
Console.WriteLine(intValue) ' Output: 10

double numerator = 10;
double denominator = 0;
if(denominator != 0)
{
    double result = numerator / denominator;
}
else
{
    Console.WriteLine("Cannot divide by zero!");
}

Dim numerator As Double = 10
Dim denominator As Double = 0
If denominator <> 0 Then
	Dim result As Double = numerator / denominator
Else
	Console.WriteLine("Cannot divide by zero!")
End If

try
{
    checked
    {
        int result = int.MaxValue + 1; // This will cause an overflow
    }
}
catch(OverflowException ex)
{
    Console.WriteLine("Overflow occurred: " + ex.Message);
}

Try
'INSTANT VB TODO TASK: There is no equivalent to a 'checked' block in VB:
'	checked
		Dim result As Integer = Integer.MaxValue + 1 ' This will cause an overflow
'INSTANT VB TODO TASK: End of the original C# 'checked' block.
Catch ex As OverflowException
	Console.WriteLine("Overflow occurred: " & ex.Message)
End Try

using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();

        // 1. Convert HTML String to PDF
        var htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>";
        var pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent);
        pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf");

        // 2. Convert HTML File to PDF
        var htmlFilePath = "path_to_your_html_file.html"; // Specify the path to your HTML file
        var pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath);
        pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf");

        // 3. Convert URL to PDF
        var url = "http://ironpdf.com"; // Specify the URL
        var pdfFromUrl = renderer.RenderUrlAsPdf(url);
        pdfFromUrl.SaveAs("URLToPDF.pdf");
    }
}

Imports IronPdf

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		Dim renderer = New ChromePdfRenderer()

		' 1. Convert HTML String to PDF
		Dim htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>"
		Dim pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent)
		pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf")

		' 2. Convert HTML File to PDF
		Dim htmlFilePath = "path_to_your_html_file.html" ' Specify the path to your HTML file
		Dim pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath)
		pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf")

		' 3. Convert URL to PDF
		Dim url = "http://ironpdf.com" ' Specify the URL
		Dim pdfFromUrl = renderer.RenderUrlAsPdf(url)
		pdfFromUrl.SaveAs("URLToPDF.pdf")
	End Sub
End Class