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VB Math

VB Math. All of your favorite mathematical operators are available in VB: + Addition - Subtraction * Multiplication / Division Integer Division Mod Modulo (remainder after integer division) ^ Exponentiation. Other Math Functions.

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VB Math

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  1. VB Math • All of your favorite mathematical operators are available in VB: • + Addition • - Subtraction • * Multiplication • / Division • \ Integer Division • Mod Modulo (remainder after integer division) • ^ Exponentiation

  2. Other Math Functions • Trig functions, logarithms, and other advanced math functions are available in the Math class (built in to VB). • To use these, just type the word “Math” followed by a period into your code; all of your options will appear in the intellisense drop-down list.

  3. String Operator • VB strings are powerful and easy to use. • A string variable can hold extremely long strings (millions of characters). • The basic string operator is the ampersand (&). It concatenates (puts together) two strings: Dim s As String = “Go “ Dim t As String = “Blue!” Dim u As String = s & t u will have the value “Go Blue!”

  4. String Functions • VB.NET offers many useful string functions • Most can be accessed simply by typing a period after a string variable:

  5. String Functions • Some of the most useful string functions are: • Length: how many characters in the string • Contains: Boolean indicating if one string is inside another • IndexOf: If one string is inside another, this tells you where it begins • StartsWith, EndsWith: Boolean indicating whether one string begins or ends with another • Insert, Remove, Replace: Common editing functions • Substring: Pulls out a part of a string starting with a given character • Split: Takes a string and creates an array of strings which are the original string divided up at a given character (like spaces for words or periods for sentences). • ToUpper, ToLower: Converts the string’s case.

  6. Shortcut assignment operators • VB.NET supports shortcut operators (+=, -=, *=, /=, &=, etc.): • A += B is the same as A = A + B • X *= 4 is the same as X = X * 4 • S &= “!” is the same as S = S & “!”

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