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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

More KwickClips from this lesson

C++ switch (1) with case 1 printing A and case 2 printing B, no break, output AB.What does the switch print?41 secTable: while checks before 0 times, do-while after 1 time, for before 0 times.Which loop always runs once?41 secC++ for loop from 1 to 5 with if (i==3) continue; output 1245.Does continue stop the loop?40 sec
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