Calculate the sum of first n natural numbers and sum of cubes of first n natural numbers Program plan: The function named “sumN()” is defined and inside the “sumN()”, Declare and initialize the variable named “fact” and store the calculated area value in it. Initialize a for loop which ranges from 1 to -1 Add the value of factor to fact. Return the value stored in the “fact” variable. The function named “sumNCubes()” is defined and inside the “sumNCubes()”, Declare and initialize the variable named “cube” and store the calculated area value in it. Initialize a for loop which ranges from 1 to -1 Multiply the value of factor with 3 and then add that value to “cube”. Return the value stored in the “cube” variable. In the “main()” function, Generate a prompt to take the user input. Call the method named “sumN()” with user input as the argument. Call the method named “sumNCubes()” with user input as the argument. Print the output statement and output value. Call the function “main()”.

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Chapter 6, Problem 4PE

Program Plan Intro

Calculate the sum of first n natural numbers and sum of cubes of first n natural numbers

Program plan:

The function named “sumN()” is defined and inside the “sumN()”,

Declare and initialize the variable named “fact” and store the calculated area value in it.

Initialize a for loop which ranges from 1 to -1

Add the value of factor to fact.

Return the value stored in the “fact” variable.

The function named “sumNCubes()” is defined and inside the “sumNCubes()”,

Declare and initialize the variable named “cube” and store the calculated area value in it.

Initialize a for loop which ranges from 1 to -1

Multiply the value of factor with 3 and then add that value to “cube”.

Return the value stored in the “cube” variable.

In the “main()” function,

Generate a prompt to take the user input.

Call the method named “sumN()” with user input as the argument.

Call the method named “sumNCubes()” with user input as the argument.

Print the output statement and output value.

Call the function “main()”.

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