Need some logic help with my math generator

[E1M1 4]

I am trying to generate math tasks about limits. My code is working but I want it output only tasks which answer type is int (-49/4 is float but -49 would be int) How could I code that check?

My code generated me (2*x^3+2*x^2-2*x-1)*(49-x^2)/(x^2+4) which solves to -49/4 which is float.

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#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <Math.au3>

$var = "x"
$maxpow = 1
$Actions = 3
Dim $Funclist[3]
$Funclist[0] = 'GenSumDifferenceOfTwoCubes()'
$Funclist[1] = 'SumDifferenceOfTwoSquares()'
$Funclist[2] = 'Rndf("%dx^3 ± %dx^2 ± %dx ± %d")'
dim $ActionList[3]

#Region ### START Koda GUI section ### Form=
$Form1 = GUICreate("Lim gen", 332, 268, 192, 124)
$Label1 = GUICtrlCreateLabel("Lim", 30, 40, 37, 23)
GUICtrlSetFont(-1, 12, 800, 0, "Century Schoolbook")
GUICtrlSetColor(-1, 0x000000)
$Label2 = GUICtrlCreateLabel("X ->", 30, 60, 23, 17)
$Add = GUICtrlCreateCheckbox("Add", 90, 10, 40, 17)
$Sub = GUICtrlCreateCheckbox("Sub", 90, 30, 40, 17)
$Mult = GUICtrlCreateCheckbox("Mult", 90, 50, 40, 17)
$Div = GUICtrlCreateCheckbox("Div", 90, 70, 40, 17)
$pow = GUICtrlCreateCheckbox("pow", 90, 90, 40, 17)
$Sqrt = GUICtrlCreateCheckbox("Sqrt", 90, 110, 40, 17)
$Abs = GUICtrlCreateCheckbox("Abs", 90, 130, 40, 17)
$Input1 = GUICtrlCreateInput("N", 50, 60, 26, 21)
$Generate = GUICtrlCreateButton("Generate", 10, 155, 75, 25, $WS_GROUP)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $Generate
            $String = ""
            For $repeat = 1 To 10
                For $nr = 0 To $Actions -1
                    $ActionList[$nr] =  Execute(ChooseRandom($Funclist))
                Next
                ConsoleWrite($ActionList[0]&RndMultDiv()&$ActionList[1]&RndMultDiv()&$ActionList[2]&@CRLF)
            Next
    EndSwitch
WEnd

Func ChooseRandom($aArray)
    $maxarray = UBound($aArray) -1
    Return $aArray[Random(0,$maxarray,1)]
EndFunc

Func GenSumDifferenceOfTwoCubes()
    Local $Str
    $prnd = Random(1, $maxpow, 1)
    $prnd = _Max(1, $prnd)
    $p = $prnd * 3
    $n = Random(1, 5, 1)
    $xpos = Random(0, 1, 1)
    $rndplussminus = Random(0, 1, 1)
    If $rndplussminus = 0 Then
        $rndplussminus = " - "
    Else
        $rndplussminus = " + "
    EndIf
    If $xpos = 0 Then
        $Str = "( x^" & $p & $rndplussminus & $n ^ (3 * $prnd) & " )"
    Else
        $Str = "( " & $n ^ (3 * $prnd) & $rndplussminus & "x^" & $p & " " & ")"
    EndIf
    If StringInStr($Str, "x^0") Then $Str = StringReplace($Str, "x^0", 1)
    Return $Str
EndFunc   ;==>GenSumDifferenceOfTwoCubes

Func SumDifferenceOfTwoSquares()
    Local $Str
    $prnd = Random(1, $maxpow, 1)
    $prnd = _Max(1, $prnd)
    $p = $prnd * 2
    $n = Random(1, 9, 1)
    $xpos = Random(0, 1, 1)
    $rndplussminus = Random(0, 1, 1)
    If $rndplussminus = 0 Then
        $rndplussminus = " - "
    Else
        $rndplussminus = " + "
    EndIf
    If $xpos = 0 Then
        $Str = "( x^" & $p & $rndplussminus & $n ^ (2 * $prnd) & " )"
    Else
        $Str = "( " & $n ^ (2 * $prnd) & $rndplussminus & "x^" & $p & " " & ")"
    EndIf
    If StringInStr($Str, "x^0") Then
        $Str = StringReplace($Str, "x^0", 1)
    EndIf
    Return $Str
EndFunc   ;==>SumDifferenceOfTwoSquares

Func Rndf($Str)
    $i = 1
    While StringInStr($Str, "±")
        $Str = StringReplace($Str, "±", RndPlusMinus(), $i)
        $i += 1
    WEnd
    $i = 1
    While StringInStr($Str, "%d")
        $Str = StringReplace($Str, "%d", Random(1,3,1), $i)
        $i += 1
    WEnd
    Return "( "&StringReplace($Str,"1x^","x^")&" )"
EndFunc

Func RndPlusMinus()
    $rndplussminus = Random(0, 1, 1)
    If $rndplussminus = 0 Then
        $rndplussminus = "-"
    Else
        $rndplussminus = "+"
    EndIf
    Return $rndplussminus
EndFunc   ;==>RndPlusMinus

Func RndMultDiv()
    $rndplussminus = Random(0, 1, 1)
    If $rndplussminus = 0 Then
        $rndplussminus = "/"
    Else
        $rndplussminus = "*"
    EndIf
    Return $rndplussminus
EndFunc   ;==>RndPlusMinus

[hannes08 35]

Hello E1M1,

did you try Int()?

Regards,

Hannes

[PsaltyDS 27]

Or, if you want to test that, did you try IsInt(), IsFloat(), etc?

[E1M1 4]

I guess I didn't explain well enough. I want to check if answer is int after I solve it. I know IsInt() but how do I make it get answers to use with IsInt()?

http://en.wikipedia.org/wiki/Limit_%28mathematics%29