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Questions and Answers
What does the code snippet total = 0; do?
What does the code snippet total = 0; do?
What is the purpose of the for loop in the provided code?
What is the purpose of the for loop in the provided code?
To compute the sum of the cubes of the first n whole numbers and store it in total.
The variables k and total can be used freely along with n in the loop.
The variables k and total can be used freely along with n in the loop.
True
In the loop, the variable ______ is used as the iteration counter.
In the loop, the variable ______ is used as the iteration counter.
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Study Notes
Task Overview
- Initialize an integer variable
nto a positive value, representing the count of whole numbers to process. - Declare integer variables
kandtotalfor use in a loop and to store the sum, respectively.
Code Explanation
- Start by setting
totalto zero to prepare for accumulation of results. - Use a
forloop that iterates from1ton:- On each iteration, calculate the cube of the current index
k. - Add the cube of
ktototal.
- On each iteration, calculate the cube of the current index
- No additional variables should be introduced beyond
n,k, andtotal.
Purpose and Functionality
- The program calculates the mathematical sum of cubes for the first
nwhole numbers. - This can be expressed mathematically: ( \text{Total} = 1^3 + 2^3 + ... + n^3 ).
- The approach efficiently computes this sum using the basic features of loops and arithmetic in programming.
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Description
This quiz focuses on calculating the sum of cubes using a for loop in programming. You'll learn how to effectively use the int variable and optimize your code without extra variables. Perfect for beginners in programming!
