Answered: You are creating a calculator app. The…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

You are creating a calculator app. The Power function must calculate the result of raising a number by a positive exponent value.
You create the following pseudocode:

Function Power(number, exponent)
DECLARE result
End Function

You need to complete the pseudocode for the function.
Which pseudocode should you use?

A. WHILE exponent > 1
SET result TO result * number
SET exponent TO exponent – 1
LOOP
Return result

B. IF exponent > 1
SET result TO result * number
SET exponent TO exponent – 1
END IF
Return result

C. IF exponent > 1
SET result TO result * number
SET exponent TO exponent + 1
END IF
Return result

D. WHILE exponent > 1

SET result TO result * number
SET exponent TO exponent + 1
LOOP
Return result

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