VB quetion

Timelessblur · Post by **Timelessblur** » Thu Oct 30, 2003 1:37 am

Well basicly I am now having to learn a little Visial Basic for one of my classes. I trying to keep any quetion that I have that pop up that I may need help on in this thread since I have a feeling I will have a lot of them.

Out of cursisity is there a round funition in VB because I need to round an intiger up. I can trick the comptuer into doing it with a if than else loop.

here is the code that teacher gave us in the example. It works but I am thinking there is an easier way to do it I just can not find it.

Code: Select all

        'Convert to an integer
        IntStamps = Convert.ToInt64(Stamps)

        'Rounding up if hte number of stamps is not exaclty divisible by 5
        If Sheets / 5 - IntStamps <= 0 Then
            txtStamps.Text = IntStamps
        Else
            txtStamps.Text = IntStamps + 1
        End If

This one more for my infomatoin but our final project which is 15% of our grade is more than likely going to be a VB project and we will have a homework dealling with them

Plasma2002b · Post by **Plasma2002b** » Thu Oct 30, 2003 3:05 am

what are you rounding?

like give what the numbers are that you get then say what the number is that you want

Moon Child · Post by **Moon Child** » Thu Oct 30, 2003 4:37 am

This might help...

http://www.vbforums.com/showthread.php? ... t=rounding

or

http://www.vbforums.com/showthread.php? ... ight=round

or

http://www.vbforums.com/showthread.php? ... ight=round

but I don't think the round() function is what you want...

harra · Post by **harra** » Thu Oct 30, 2003 8:31 am

Timeless,

VB is one of the things I do for a living. What version are you using? VB6.0 or VB.NET?

This line:

Convert.ToInt64(x)

Doesn't look familiar to me and since I've never used VB.NET which a more object-oriented programing language (ala Java and C++), I'm wondering if you are using VB.NET

Timelessblur · Post by **Timelessblur** » Thu Oct 30, 2003 8:43 am

Yeah it is VB.net. I think Int64 is just converting the verble stamps to a 64 bit integer and then storing as Intstamps

harra · Post by **harra** » Thu Oct 30, 2003 8:56 am

Drat!

Unfortunately, I can't be of much help with VB.NET. My company hasn't upgraded any of their development platforms to the new .NET infrastructure. Since M$ still supports the 6.0 architecture, we still use it.

Maybe someone else here on the forum knows VB.NET, or try and locate a VB.NET related forum. THat is your best bet to get quick, informative answers to all your programming needs

Master Jedi · Post by **Master Jedi** » Thu Oct 30, 2003 1:35 pm

Timeless:

Math.Round() - Round nearest
Math.Ceiling() - Round up
Math.Floor() - Round down

Rounding to the nearest x (in your case your rounding UP to 5):

'Round up to 5
x = 121
x = 5*Math.Ceiling(x / 5)
'x is now 125

'Round down to 5
x = 123
x = 5*Math.Floor(x / 5)
'x is now 125

'Round to nearest 5
x = 123
x = 5*Math.Round(x / 5)
'x is now 125

It appears as though the function determines the number of stamps required to mail something by the number of pages, in which case you'd want:

NumOfStamps = Math.Ceiling(NumOfPages / 5)

So if "Sheets" were the number of pages and intStamps were the number of stamps, you'd want:

Code: Select all

        Sheets = 37 'Replace this line with the correct one to retrieve # of sheets
        intStamps = Math.Ceiling(Sheets / 5)
        txtStamps.Text = intStamps

By the example your teacher gave you, I think it's safe to assume he's an idiot. Why the hell would you need a 64 bit number to represent the number of stamps (as many as 2^63 - 1...high order bit represents pos/neg). That many stamps would cost $3,412,647,653,636,267,048.59 (something like a million times the combined net worth of everyone in the country)

Master Jedi · Post by **Master Jedi** » Thu Oct 30, 2003 2:12 pm

Harra:

Convert is used to change the type of an expression. For instance if you have a string with a number in it A = "32" then Convert.ToInt16(A) would return a 16-bit number: 0000000000100000

Plasma2002b · Post by **Plasma2002b** » Thu Oct 30, 2003 2:30 pm

just wondering here..... wouldnt a type of cInt() function be better for that though?

Master Jedi · Post by **Master Jedi** » Thu Oct 30, 2003 2:34 pm

Plasma2002b wrote:just wondering here..... wouldnt a type of cInt() function be better for that though?

CInt(), CStr(), CDbl(), etc. are not present in VB.NET. They were replaced by the Convert class.

Timelessblur · Post by **Timelessblur** » Thu Oct 30, 2003 3:04 pm

Thanks Jedi.
As for my teacher he is pretty good but when it comes to programing he does not know that much and hell we are Civil Engineers so it is not like he knows much hell it not like I am going to be learning that much in it. At did admite to the class that he knows very little about programing which is more than I can say for the EE/CS teacher teacher people here how to really program From what I am told this guy does not know how to program at all and he just teaching straight out of the book. I am so glad I am not a Computer science major

Master Jedi · Post by **Master Jedi** » Thu Oct 30, 2003 6:45 pm

I'm glad I'm not either. I'm a nuclear engineering major.

harra · Post by **harra** » Thu Oct 30, 2003 10:04 pm

Master Jedi wrote:Harra:

Convert is used to change the type of an expression. For instance if you have a string with a number in it A = "32" then Convert.ToInt16(A) would return a 16-bit number: 0000000000100000

I knew that. It is very similar to the C and Java programming I'm doing. I should've been clearer in my previous statement. What I meant to say was that since I know it wasn't present in VB6.0 (where I would've suggested the CInt() that Brian mentioned) it MUST be VB.NET.

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