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#1
June 1st, 2012, 07:31 PM
 jas0401
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Join Date: Jun 2012
Posts: 1
Time spent in forums: 24 m 37 sec
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Help - Nested Loop Trouble

Hey guys I'm having trouble with some homework hope someone can help. I have to display asterisks in a label using a nested Do..Loop within a For..Next Loop. It should look like this:

**
****
******
********
**********

Here's my code so far :

For Count As Integer = 2 To 10 Step 2
Dim x As Integer
Do Until x = 10
x = x + 2
lblAsterisks.Text = "**" &
ControlChars.NewLine
Loop
Next Count

#2
June 1st, 2012, 08:50 PM
 requinix
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Join Date: Mar 2007
Location: Washington, USA
Posts: 13,514
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Though there are a number of ways of solving this problem, here you're supposed to build the asterisks one line at a time. There are two loops: one that loops for each line to build, and another inside it that loops for each pair of asterisks (because it shows two at a time) on that line.

Look at it this way:
Code:
```Line 1 has 1 pair of asterisks:
Add the first pair.
Line 2 has 2 pairs of asterisks:
Add the first pair.
Add the second pair.
Line 3 has 3 pairs of asterisks:
Add the first pair.
Add the second pair.
Add the third pair.
Line 4 has 4 pairs of asterisks.
Add the first pair.
Add the second pair.
Add the third pair.
Add the fourth pair.
Line 5 has 5 pairs of asterisks.
Add the first pair.
Add the second pair.
Add the third pair.
Add the fourth pair.
Add the fifth pair.```

Do you see where the two loops are?

And a suggestion: try writing it with two For loops first. When that works, convert the inner loop into a Do loop.

#3
June 2nd, 2012, 11:37 AM
 couttsj
Contributing User

Join Date: Aug 2011
Posts: 277
Time spent in forums: 4 Days 3 h 4 m 47 sec
Reputation Power: 44
I am not sure why you would need a Do Loop, but I will leave you to figure that one out.
Code:
```    Dim x As Integer
Dim lblAsterisks As String
For x = 2 To 10 Step 2
lblAsterisks = lblAsterisks & String(x, "**") & vbCrLf
Next x
Debug.Print lblAsterisks```

J.A. Coutts

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