I'm confused to how this conversion works for a for to while loop

If the for loop is

for i=2:3:20
                   disp(i);
end

Would the while loop be:

i=2
while (i<20)
i=i+3
disp(i)
end

[Thorsten]

What exactly confuses you?

Answer 1

[Walter Roberson]

Your question is much improved from what you posted first.

The answer is "not quite". The while loop you have programmed does not display 2.

You need to do the action of the loop before you increment the loop control variable, and you need to be careful about what to do if the control variable is exactly equal to the final allowed value.