KwickClips Cyber Safety and Ethics · 40 sec · free
Why start fact at 1?
Short answer. A product starts at 1; 0 would make it 0.
What does a sum start at?
0.
Remember
| Product starts at 1 |
| Sum starts at 0 |
Can one for loop find five factorial? Yes. Fact starts at one, not zero. The loop multiplies one, two, three, four and five. It prints one hundred twenty. A product starts at one. A sum starts at zero.
This clip is from the full lesson: Control Statements in C++: if, switch and Loops — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 10 Information Technology (402), CBSE Class 10 Information Technology (402), ISC Class 11 Computer Science (868), GSEB Std 11 Computer Studies
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