KwickClips Python · 43 sec · free
How many trace lines do you write?
Short answer. One for every run of the inner body.
What happens to col when row changes?
It restarts from its start value.
Trace table
| row | col | Prints |
|---|---|---|
| 1 | 1 | 1 |
| 1 | 2 | 2 |
| 2 | 1 | 2 |
| 2 | 2 | 4 |
Remember
| One table line per inner run |
| col restarts when row changes |
Two loops, row times col. What prints? Both loops run one and two. One times one. One times two. Two times one. Two times two. Remember two things. Write one line per inner run. Col restarts when row changes.
This clip is from the full lesson: Nested Loops and Pattern Programs — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Artificial Intelligence (417), CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), ICSE Class 10 Computer Applications
More KwickClips from this lesson
Does the inner loop restart each row?43 sec
What decides how many stars a row has?41 sec
Is 1 a prime number?39 secDisclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy