VB.NET Sqrt Example – Code Sample Syntax
VB.NET Sqrt Example – Code Sample Syntax
Purpose: – Illustrates using VB.NET Sqrt Code Example.
Purpose:
takes number as a double data type and returns the square
root as a double data type.
Syntax:
Sqrt(doublenumber)
Sqrt(doublenumber)
Parameters | Description | doublenumber | double percision floating point number that you want to find the square root |
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Result Data Type | Description | double | square root of the input parameter 1. If input is 0 or positive, result is square root of parameter1 2. If input is negative or NaN (Not a Number), result is NaN 3. If input is positive infinity, result is positive infinity |
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Step 1: Click Visual Basic to Cut-n-paste code into clsSqrt.vb
Imports System.Math Public Class clsSqrt Public Sub Main() '******************************************************************************** ' Purpose: takes number as a double data type and returns the square ' root as a double data type. ' ' Syntax: Sqrt(doublenumber) ' ' Parameter1: doublenumber - double percision floating point ' number that you want to find the square root ' ' Result: double - square root of the input parameter ' 1. If input is 0 or positive, result is square ' root of parameter1 ' 2. If input is negative or NaN (Not a Number), ' result is NaN ' 3. If input is positive infinity, result is ' positive infinity ' '******************************************************************************** ' This example is from http://idealprogrammer.com Console.WriteLine("Example #1: Sqrt(doublenumber)") Console.WriteLine("Sqrt(4) = {0}", Sqrt(4)) ' Returns 2 'write blank line to make output easier to read Console.WriteLine() Console.WriteLine("Example #2: Sqrt(doublenumber)") Console.WriteLine("Sqrt(9) = {0}", Sqrt(9)) ' Returns 3 'write blank line to make output easier to read Console.WriteLine() Console.WriteLine("Example #3: Sqrt(doublenumber)") Console.WriteLine("Sqrt(-9) = {0}", Sqrt(-9)) ' Returns NaN 'Prevent console from closing before you press enter Console.ReadLine() End Sub End Class |
Step 2: Click Visual Basic to Cut-n-paste code into Module1.vb
Module Module1 Sub Main() Dim myclsSqrt As New clsSqrt myclsSqrt.Main() End Sub End Module |
Prerequistes:
- Install Visual Basic (Express or Standard Edition)
- Install SQL Server Express
- Download Northwind and pubs Database
- Attach Northwind Database to Databases in Sql Express
- Attach pubs Database to Databases in Sql Express
Notes:
- Console Application is used to simplify things, but Windows Forms or Web Forms could also be used
- You can build a library of syntax examples by using same project over and over and just commenting out what you do not want to execute in Module1.vb
Instructions:
- Use Visual Basic 2010 Express or Standard Edition
- Create new project;
- Click File/New Project
- Select Console Application Template
- Select Visual Basic for Language
- name of project could be VBNET_Syntax.
- Add New folder named “Functions”
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: Functions
- Add New subfolder named “MathFunctions”
- Right-click Functions folder in solution explorer;
- add new folder;
- name of folder could be: MathFunctions
- Add Class Named clsSqrt to MathFunctions folder
- Right-click MathFunctions folder;
- add new item;
- Select class
- Class name could be clsSqrt
- Click on Visual Basic in code in step 1 above to copy code into clsSqrt.vb
- Click on Visual Basic in code in step 2 above to copy code into Module1.vb
- Click green arrow or press F5 to run program