Round expression [, decimalplaces] Parameters expression giá trị decimalplaces số số lấy sau dấu phẩy Return Value số đã đc làm tròn Remarks The decimalplaces parameter can be nega
Trang 1Round
làm tròn
Round ( expression [, decimalplaces] )
Parameters
expression giá trị
decimalplaces số số lấy sau dấu phẩy
Return Value
số đã đc làm tròn
Remarks
The decimalplaces parameter can be negative which allows you to round to the
ones, tens, hundred, etc place Note that up to fifteen digits of a number are
displayed, and note that decimalplaces will never pad a number with trailing zeros
Related
Example
$x = Round(-1.582, 1) ;returns -1.6
$y = Round(3.1415, 9) ;no change
$z = Round(123.5, -1) ;returns 120
Function Reference
Trang 2Sin
Calculates the sine of a number
Sin ( expression )
Parameters
expression Value in radians
Return Value
Returns the trigonometric sine of number
Remarks
1° = pi / 180 radians
Related
Example
$pi = 3.14159265358979
$x = sin($pi / 4) ;returns 0.707106781186547 which you should recognize as sqrt(2)/2
$degToRad = $pi / 180
$y = Sin(90 * $degToRad) ;sine of 90°
Function Reference
Trang 3Sqrt
Calculates the square-root of a number
Sqrt ( expression )
Parameters
expression Any nonnegative expression to get the square-root of
Return Value
Success: Returns the square-root
Failure: Returns 0 and sets @error to 1 if parameter is negative
Remarks
To compute an nth root, use the power operator: x ^ (1/n)
MsgBox(0,"The cube root of 27 is", 27 ^ (1/3) )
Related
Example
$x = Sqrt(2) ;returns 1.4142135623731
$y = sqrt(9) ;returns 3
Function Reference
Trang 4SRandom
Set Seed for random number generation
SRandom ( Seed )
Parameters
Seed Seed value for random number generation Number between -2^31
and 2^31-1
Return Value
None
Remarks
None
Related
Example
SRandom(12)
$rand=Random()
Function Reference
Tan
Calculates the tangent of a number
Trang 5Tan ( expression )
Parameters
expression Value in radians
Return Value
Returns the trigonometric tangent of number
Remarks
1° = pi / 180 radians
Note that Tan is "infinite" for -3PI/2, -PI/2, PI/2, 3PI/2, 5PI/2, and tends to return 1.63317787283838e+016 for such multiples of Pi-halves
Related
Example
$pi = 3.14159265358979
$x = tan($pi / 4)
$degToRad = $pi / 180
$y = Tan(90 * $degToRad) ;tangent of 90°
Function Reference
InputBox
Displays an input box to ask the user to enter a string
Trang 6InputBox ( "title", "Prompt" [, "Default" [, "password char" [, width, height [, left, top [, timeOut [, hwnd]]]]]] )
Parameters
title The title of the input box
prompt A message to the user indicating what kind of input is expected default The value that the input box starts with
password
char
[optional] The character to replace all typed characters with If you want the actual typed character to appear, define with an empty string ("") (default) or a space for the first character If you provide a
multiple-char string, only the first char is used for character masking There are special meanings for the second and subsequent characters See Remarks
width [optional] The width of the window If defined, height must also be
defined Use -1 or the keyword Default for default width
height [optional] The height of the window If defined, width must also be
defined Use -1 or the keyword Default for default height
left
[optional] The left side of the input box By default, the box is centered If defined, top must also be defined Use the keyword Default for this parameter to center the InputBox horizontally
top
[optional] The top of the input box By default, the box is centered If defined, left must also be defined Use the keyword Default for this parameter to center the InputBox vertically
timeout [optional] How many seconds to wait before automatically cancelling
the InputBox
hwnd [optional] The window handle to use as the parent for this dialog
Return Value
Success: Returns the string that was entered
Failure: Returns "" (blank string) and sets @error as follows:
@Error 0 = The string returned is valid
1 = The Cancel button was pushed