Why this loop code is wrong and cannot print？

Question

The code below, putting "i+=1" after continue, it cannot print, but when I change its position to put it after the variable age, it run well, what the different between these 2 positions? Thank you in advance.

total = 0
i = 1
while i <= 5:
age = int(input())
if age >= 3:
total += 100
else:
continue
i +=1
print(total)

Answer 1

Because when the increment i += 1 is down there, it will not be processed once `continue` has been issued. And by that, <i> is never incremented (remains to be 3), and you're stuck in an infinite loop.

But if you move it up after reading <age>, then `continue` will not prevent the increment i += 1 from being processed, and it's safe.

You can also remove the `else` block entirely and it will still work the same way.