Initializes the random-number generator used by the Rnd function.
Tham số :
Number: Any integer value. Used as seed to initialize the random-number generator. Equal seeds result in equal random-number sequences by the Rnd function. If the parameter is omitted, the Randomize statement will be ignored.
Unless a predictable sequence of numbers is desired, there is no need to use the Randomize statement, as the random-number generator will be initialized automatically at first use – it will be seeded using a system-provided random-number generator that produces uniformly-distributed, non-deterministic random numbers. If no such generator is available on the system, the system time will be used as seed.
The Randomize statement affects BASIC's Rnd function only. Other random-number generators (for example the Calc's RAND() function, etc.) are not affected by it.
Thí dụ :
Sub ExampleRandomize Dim iCount As Integer, iVar As Integer, sText As String Dim iSpectral(10) As Integer Randomize 2^14-1 For iCount = 1 To 1000 iVar = Int((10 * Rnd) ) REM Phạm vi từ 0 đến 9 iSpectral(iVar) = iSpectral(iVar) +1 Next iCount sText = " | " For iCount = 0 To 9 sText = sText & iSpectral(iCount) & " | " Next iCount MsgBox sText,0,"Phân phối phổ" End Sub