lecture notes

For Loops
are an example of syntactic sugar

1) how do i start?
2) how do i end?
3) step

For i = 1 to 10
    ListBox1.Items.Add(i*i)
Next

When should I use a For loop?
1) you want to do something a fixed number of times
(In this instance, i don't *use* the variable i inside the loop at all)
2) when you want to generate a series of numbers

ex 1:

Dim year as Integer
pop = 300000
For year = 2006 To 2010
    LstTable.Items.Add(year & "  " & pop)
    pop = pop + pop * 0.03
Next


Alternatively:

pop = 300000
For year as integer = 2006 To 2010
    LstTable.Items.Add(year & "  " & pop)
    pop = pop + pop * 0.03
Next


if I have:
x operator= 6

x = x operator 6

for loops, 30-40 even

row = ""
for i = 1 to 10
    row = row & "*"
next
for i = 1 to 10
    listbox1.items.add(row)
next


for i = 1 to 10
    row = ""
    for i = 1 to 10
        row = row & "*"
    next
    listbox1.items.add(row)
next