Random numbers and additional characters

[ianpaisley]

I have two short queries. I tried a search on the VB database, but didn't have much success.

The following code gives me a random number between 0 and 10 in my textbox:

Private Sub Form_Load()
Randomize
Text1 = Int(Rnd * 10)
End sub

How can I exclude the number zero from appearing?

Secondly, I want to add the letter 'X' onto the number that appears in the text box. I thought it was simply a case of:

Label2.caption = Int(Rnd * 10) + "X".

But it didn't work.

Any help on these issues would be greatly appreciated.

[browner]

This should give you no zero:

Private Sub Form_Load()
Randomize
Text1 = Int(Rnd * 9) + 1
End sub

And this should give you 9X, 3X etc

Label2.caption = Int(Rnd * 10) & "X"

[onerrorgoto]

Sorry browner, you are right in all points but one

You shall use Text1 = Int(Rnd * 10) + 1 since 10 is how many numbers you want the rnd to go between.
If you use (rnd*9)+1 you will only get #1-9
but (rnd*10)+1 will give you #1-10

good luck

[browner]

How right you are. So that means Int(Rnd * 10)
actually returns one of 11 random numbers. I wish VB was less irregular in it's use of 0 or 1 as the staring point in arrays, counts, string functions, etc, etc, etc. But anyway....

[Mark Sreeves]

browner, theres nothing irregular about Rnd() it produces a single between 0 and 1

int() of a number between 0 and 1 will ALWAYS be 0!

[browner]

Alright - that is fair enough - but my point was that in C or other languages you are never in doubt that EVERYTHING runs from zero to...... However in VB some things are not so

i.e.

MsgBox Mid("HELLO", 0, 1) = an error whereas
MsgBox List1.List(0) = not an error

so if you have 10 characters in a string you have to do a loop from 1 to 10 to access them, however to access ten strings in a listbox you have to go from 0 to 9, to access 10 elements. In an array, you have a choice depending on your option base etc etc etc. So it is never immediately obvious that you start at 1 or 0. Ahh man - I am just getting myself in trouble here... leave me alone. I know that C uses arrays for strings and option base is optional and everything else, but still it is a bit confusing in VB.

Phew

[ianpaisley]

Thanks a lot, lads.

I'm never too sure of that rnd stuff myself. I had no excuses for that & "x" instead of + "x", though - I should have figured it out a mile away.

Thanks.

[Mark Sreeves]

Browner,

Alright - that is fair enough - but my point was that in C or other languages you are never in doubt that EVERYTHING runs from zero to...... However in VB some things are not so

Yeah, I agree totally

Listboxes run from 0
listViews run from 1

where's the logic in that??