FOR Loops
FOR Loops

FOR Loops

FOR
loops are an easy way to iterate through a range of values and run a body of code for each value iterated.
Format
FOR <I> = <A> TO <B> [STEP <C>]
~~BODY~~
NEXT <I>
Parameters
<I>
= indicates a numeric variable is used. <I> increments each time through the
FOR‑LOOP
.
<A>
= the value assigned to <I> the first time through the loop
<B>
= the last value through the loop
<C>
= (Optional) the amount <I> increments each time through the loop
Values of
I
for the following situations:
Statement
Result
FOR I=1 TO 10
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
FOR I=10 TO 1
{10, 9, 8, 7, 6, 5, 4, 3, 2, 1}
FOR I=1 TO 10 STEP 2
{1, 3, 5, 7, 9}
FOR I=10 TO 1 STEP 2
{10, 8, 6, 4, 2}
FOR I=10 TO 1 STEP 2
{ } FOR LOOP skipped
Example
This is an example of how to use the
FOR LOOP
command:
10 FOR X=1 TO 10 STEP 1 20 PRINT X; ":ZBI IS FUN" 30 NEXT X
Comments
FOR
loops can be nested but cannot overlap. Variables cannot be reused by the nested loops.