How many times loop will execute?

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i = 1
while i < 10000 and i > 0 and 1:
print “ Hello ...”
i = 2 * i

What I have tried:

Please help me to solve this as I cannot able to think that the output is 14 times how? Can anyone tell me please!!

Posted 9-Aug-21 23:08pm

Member 15319071

Updated 9-Aug-21 23:34pm

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OriginalGriff · Answer 1 · 2021-08-09T23:34:00

If your code was valid Python - which it isn't ... :laugh:

You are multiplying 1 by 2 each time round the loop:

1
2
4
8
16
...

Which is better represented in binary:

C#

Because that is how computers store numbers.
And 2^14 is 16384 so your loop ends.

It's more obvious if you do this:

Python

i = 1
while i < 10000 and i > 0 and 1:
  print (' Hello ...')
  print (i)
  i = 2 * i
print('Done!')
print (i)

CHill60 · Answer 2 · 2021-08-09T23:33:00

Solution 1

Just follow the logic ...

At the start i = 1

within the loop (I am assuming it is within the loop - use proper indentation!)
i = 2 * i so

Loop 1 i = 2 * 1 = 2
Loop 2 i = 2 * 2 = 4
Loop 3 i = 2 * 4 = 8

... see the pattern here?

Now do the rest yourself and watch for when i > 10000

Posted 9-Aug-21 23:33pm

CHill60