Bug On Rounding On Division And MOD Of Integers?

Feb 11, 2012

I have a group of 25 labels named Label1, Label2, Label3, ... Label25 in a square of 5 per row, 5 per column and I wanted to assign the backcolor to all of them on a loop and assign a value of "True" or "False" to a matrix of 25 boolean values representing them.

But I was getting errors on the pattern created.

My approach was to use a substring containing a number copied from the label names:

Num = Val(sender.name.substring(5))

And the subindexes of the matrix:

p = (Num - 1) / 5
q = (Num - 1) Mod 5

The values for the lower corner of the matrix were rouded to 5 instead of being 4. Instead of (4,0) ,(4,1), (4,2), (4,3) (4,4) I was getting (5,0),(5,1)...(5,5)

So I solved the problem by creating two single variables "A" and "B", doing the divission and MOD operations on them, finding the floor of them and then converting to integer:

Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _
Label1.Click, Label2.Click, Label3.Click, Label4.Click, Label5.Click, _

[Code]......

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IDE :: Cannot Get VB2010 To Stop Rounding Double Value Before Division Operation

Oct 1, 2009

When running the following, the code wants to return a value of 5 dollars, 3 quarters, 0 dimes, 1 nickle and 3 pennies when change due is 4.78.

'calculate amount of dollars, quarters, dimes, nickles, and pennies.

Double.TryParse(txtDollars.Text, dblDollars)
Double.TryParse(txtQuarters.Text, dblQuarters)
Double.TryParse(txtDimes.Text, dblDimes)

[Code].....

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Feb 17, 2012

How do you check if the division of two integers is a whole number, just answer with code, no links?

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Feb 17, 2012

How do you get the remainder of the division of two integers.

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Mar 20, 2010

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Feb 2, 2012

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Dim ints() As Integer = {1,2,2,5,4,6}

The number that shows up more than once is 2.

How can I run through the array and compare each integer with the numbers in the array. I tried a for loop but it didn't return the value I was looking for.

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What's the difference between / and for division in vb.net? My code gives very different answers depending on which I use. I've seen both before, but never knew the difference.

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Feb 24, 2011

I am using oledbconnection object with access database engine 64 bit to get data from Excel file. While using sqlconnection object if sql string has these statements "SET ARITHABORT OFF;SET ANSI_WARNINGS OFF;" , then division by zero exception doesn't cause any problem. But while using oledbconnection these statements cause error. My code samples are below:

Dim PbpConn As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=C:BuzBeatDataPBPData.xls" & ";" & _

[Code]....

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Sep 3, 2009

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Nov 16, 2010

I've got a problem approximating the result of a division that should give a sharp result:

I use this code:

pListPrice *= 100 / (100 + VATPercentage)

where VATPercentage = 20D is declared as Decimal type. pListPrice = 25.2D is declared Decimal too.

The result should be: 21.00 sharp!

Instead I get 20.99999999999999999999D

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Apr 27, 2011

In the following linq query I have a division by zero exception wich I can't seem to code around. It occurs when the Sum of fldDevider returns 0.[code]...

How can I Make sure the ValuePerMonth field is 0 when the Group.Sum(Function(dr) CDec(dr.Field(Of String)(fldDevider))) function returns a 0. Or how do I return a 1 for Sum fldDevider if it is actually 0.

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Mar 9, 2009

I have hit a block and not sure the best way to go with this. Looking for resources to find more on the subject

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Mar 6, 2005

This exercise says :"Write a program that inputs one number consisting of five digits from the user, separates the number into its individual digits and prints the digits separated from one another by three spaces each. For example, if the user types the number 42339, the program should print
4 2 3 3 9 Use the command window for input and output. [Hint: This exercise is possible with the techniques discussed in this chapter. You will need to use both division and modulous operations go "pick off" each digit.]"

Here is what I have learned in Chapter 3:

�If/Then Statements
�Console.Write()
�Console.WriteLine()

[Code]....

This exercise I have yet to start, and don't think I will be able to do much, because I have no clue how to "Pick off" the numbers using division and modulous operators. I know what the mod operator does, but I do not know how to use it and division to do what this exercise is asking me to do.

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I am trying to load a small decimal number (eg 0.0566897 from a dataset field in to a variable (double), divide it by 2 and place it back in the dataset. After the divison, the variable is 0.0 and the rest of the decimal places are gone. How can I avoid losing the decimal places?

Dim dblCostps As Double = "0.0000000"
dblCostps = todds.Tables("todinfo").Rows(1).Item("cost_per_second")
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Apr 15, 2010

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Result is then compared to a threshold which might have additional improvements as well, but I'll leave them another day

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Mar 11, 2010

i have a division of 2 integer that give me a result as2,3944534 ...how i can give e result as

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Jan 30, 2010

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My problem is the multiplication and division does not occur. The numbers and operations line up. The numop(m)=g*h should yield numop(m)=num(1)*num(3). Is there some sort of code to be inserted to accomplish these multiplication and division operations?

[Code]...

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When trying to divide the following, I get an overflow error:SAA_EM_DM(i, 1) = SAA(i, 1) / SAA_EQ_FI(i, 1)

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Mar 18, 2011

coding a shipping application where it adds .75 for every 100.00 dollars it would look something like this

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300.01 to 400.00 = 3.00

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? 567 / 1000

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? 567 / 1000.0

Why is there this difference? Why does C# require the explicit decimal point after 1000?

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[Code]...

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Dec 15, 2009

if i have an integer a_variable = 1.1 how do i round it up to 2?

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I have very basic question, I'm really not familiar with vb.net.

I have code like this: Dim minutes As Integer = (55 / 60)

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Can someone hint me up how to accomplish this ?

edit. OK for those with same problem try dividing with (Yeah, it's not escape character in vb.net)

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