Simple Calculator Algorithm
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Questions and Answers

Based on the algorithm, what is the purpose of asking the user to enter the first number and save it to X?

  • To test the system output
  • To calculate the sum (correct)
  • To verify the display algorithm
  • To display the welcome message
  • If the user enters 50 as the first number and 15 as the second number, what would be the sum displayed according to the algorithm?

  • -65
  • -35
  • 65
  • 35 (correct)
  • What does the algorithm specify should happen if the user selects the operator sign as '+'?

  • Calculate X + Y (correct)
  • Calculate Y - X
  • Display 'Welcome to our Calculator'
  • Calculate X - Y
  • In the given algorithm, what is the significance of having a 'Welcome to our Calculator' message?

    <p>To initialize variables</p> Signup and view all the answers

    How is the value of Sign determined in the algorithm?

    <p>User selection of operator sign</p> Signup and view all the answers

    What is the purpose of displaying the welcome message in the algorithm?

    <p>To greet the user and introduce the calculator</p> Signup and view all the answers

    If the user enters 20 as the first number and 10 as the second number, what will be stored in variable X?

    <p>20</p> Signup and view all the answers

    What does the algorithm do if the user selects the sign as '-'?

    <p>Subtracts Y from X</p> Signup and view all the answers

    After asking the user to input numbers, what is the next step in the algorithm?

    <p>Ask for sign selection</p> Signup and view all the answers

    What is the result if the user inputs 15 as X, 15 as Y, and selects '+' as the sign?

    <p>+30</p> Signup and view all the answers

    If the welcome message was not displayed, what impact would it have on the functionality of the algorithm?

    <p>The algorithm would skip asking for user input</p> Signup and view all the answers

    What should be the first step in the algorithm described?

    <p>Display a welcome message saying 'Welcome to our Calculator'</p> Signup and view all the answers

    What is the purpose of saving a number to X in the algorithm?

    <p>To store the first user input for calculation</p> Signup and view all the answers

    Which step involves checking if the operator selected by the user is addition (+) or subtraction (-)?

    <p>Selecting the operator sign</p> Signup and view all the answers

    What action is taken if the selected operator is addition (+) in the algorithm?

    <p>Add X and Y to calculate the sum</p> Signup and view all the answers

    If a user enters '20' as the first number and '10' as the second number, what will be displayed as the sum if the operator selected is subtraction (-)?

    <p>-10</p> Signup and view all the answers

    Which part of the algorithm is essential for determining whether to add or subtract X and Y?

    <p>Selecting the operator sign</p> Signup and view all the answers

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