Basic Programming: Lists and Functions
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Questions and Answers

What does the loop do in the code for "Reading the list in the opposite way"?

The loop displays the content of the list in reverse order, starting from the last item and working back to the first.

What is the purpose of this line of code? sum=sum+v[i]

It adds the current item of the array (v[i]) to the sum variable, effectively keeping a running total.

The line of code v[i]=TextWindow.Read() reads a value from the keyboard.

True

The line of code TextWindow.WriteLine("fill in item "+i+" of the list") is used to display a message on screen.

<p>True</p> Signup and view all the answers

Explain the role of TextWindow.WriteLine("The value of the item "+i+" is "+sum).

<p>This code displays the sum of the items in the list.</p> Signup and view all the answers

What is the purpose of the program you wrote in the "practice" section?

<p>The program takes a list of numbers from the user and calculates their sum.</p> Signup and view all the answers

What parameters changed in the code to be able to display the content of the list in the opposite way?

<p>The changes made involved modifying the loop control variable (<code>i</code>) and the way it changes. The original loop incremented <code>i</code> from 1 to 5, while the modified loop decrements <code>i</code> from 5 to 1.</p> Signup and view all the answers

What does the phrase "the loop is turning in opposite way starting from Value "5" to reach "1" " mean?

<p>It means that the loop is iterating backwards, starting from the value 5 and ending at 1.</p> Signup and view all the answers

Study Notes

Reading Lists in Opposite Order

  • A program can display a list in reverse order
  • Parameters that change for reverse order display are not detailed.

Setting Counter Values

  • The counter starts at 5 and decrements
  • Loops through elements in reverse order

Small Basic Program

  • The program takes user input for a list of numbers.
  • The program calculates the sum of those numbers.
  • The sum is then displayed.

Dialogue with User

  • The program prompts for the length of the input list

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Description

This quiz covers fundamental programming concepts related to lists, including displaying them in reverse order and manipulating counter values. Additionally, it touches on a simple program for taking user input to calculate the sum of a list of numbers. Test your knowledge on these essential programming principles.

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