Extremely Easy Program That I Am Making Hard

[Adampff]

Hello all!

I am working on a program which should be easy, but I am making it harder than it should be on myself.



I need to make a program that if I press the button below each ListBox that it displays the corresponding output.

How my teacher would like us to do this is to actually make each one a rectangle and half of the characters be spaces and the other half be A, B, C or D. Does that make sense?

So for the first output is should be like this...

lets say space = #

A#########
AA########
AAA#######
AAAA######
AAAAA#####
AAAAAA####
AAAAAAA###
AAAAAAAA##
AAAAAAAAA#
AAAAAAAAAA

Here is a flowchart we made in class in Visual Logic, I am not sure if any of who have heard of this, but either way here is the flowchart.



Here is the corresponding code implemented into Visual Basic.

Dim number As Integer
        Dim FirstCharacter As String
        Dim SecondCharacter As String
        Dim row As String
 
        number = 5
        FirstCharacter = "A"
        SecondCharacter = "*"
        row = ""
 
        For count = 1 To number
 
            For firstCount = 1 To count
                row = row & FirstCharacter
 
                For secondCount = 1 To ((number - firstCount) + 1)
                    row = row & SecondCharacter
 
 
                Next
                
            Next
            lstOutputA.Items.Add(row)
            row = ""
        Nextt

Now I am not sure what I did wrong, but this code doesn't work in Visual Basic. I The output is...

A*****
A*****A****
A*****A****A***
A*****A****A***A**
A*****A****A***A**A*

NOTE: I am using the "*" to represent spaces so I can see where they are.

I am pretty sure it is because these...

For firstCount = 1 To count
                row = row & FirstCharacter
 
                For secondCount = 1 To ((number - firstCount) + 1)
                    row = row & SecondCharacter
 
 
                Next
                
            Next

Need to be separated loops instead of nested loops. So they should be like this...

For firstCount = 1 To count
                row = row & FirstCharacter
            Next
 
            For secondCount = 1 To ((number - firstCount) + 1)
                row = row & SecondCharacter
 
 
            Next
            lstOuput.Items.Add(row)
            row = ""

The only problem is firstCount in the secondCount loop becomes invalid because it is not yet declared.

So how would I get around that?

Any help would be greatly appreciated!

Thanks!

[Shaggy Hiker]

The first two loops are pretty good, except that both should go to N where N is the number of lines you want (you use 5, but I see no part of your example that has only 5 lines). The loops would look like:

For x = 1 to N
 For Y = 1 to N
  If Y>X Then
   'Add the space
  Else
   'Add the character
  End If
 Next
Next

[Evil_Giraffe]

If you're looking to do a literal translation of that flowchart into Visual Basic, then you've made a mistake. The flowchart shows a loop from 1 to number (looping the rows). Inside that loop are two loops, one to make the "first char"s and one to make the "second char"s. It is these two loops that you've made a mistake in translating.