Understanding Return Values and Modifying Parameters in Functions
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Questions and Answers

What is the purpose of breaking down an algorithm into smaller subprograms?

  • To reduce code duplication
  • To make the program more complex
  • To slow down the execution of the program
  • To make the program more modular and easier to understand (correct)
  • What is the purpose of the addInterest function?

  • To display the balance
  • To add interest to a balance (correct)
  • To subtract interest from a balance
  • To calculate the rate of interest
  • What is the data type of text in Python?

  • float
  • str (correct)
  • bool
  • int
  • What is enclosed with quotation marks or apostrophes in Python?

    <p>A string</p> Signup and view all the answers

    What is the purpose of using input() in Python?

    <p>To get input from the user</p> Signup and view all the answers

    What is the benefit of using functions in programming?

    <p>To make the program more modular and reduce code duplication</p> Signup and view all the answers

    What is the primary purpose of a return value in a function?

    <p>To send information from a function back to the calling program</p> Signup and view all the answers

    When a function receives a parameter by value, what happens to the original variable?

    <p>The original variable remains unchanged</p> Signup and view all the answers

    What is the term for passing variables themselves as parameters to a function?

    <p>Passing by reference</p> Signup and view all the answers

    Why did the amount not change in the test() function?

    <p>Because the amount was passed by value and not by reference</p> Signup and view all the answers

    What type of data is passed by value in most programming languages?

    <p>Numbers and strings</p> Signup and view all the answers

    What happens to the formal parameter when a new value is assigned to it in a function?

    <p>The formal parameter is updated, but the original variable remains unchanged</p> Signup and view all the answers

    What does the ord() function return?

    <p>The numeric (ordinal) code of a single character</p> Signup and view all the answers

    What is the purpose of the chr() function?

    <p>To convert a numeric code to the corresponding character</p> Signup and view all the answers

    How does the encoding algorithm work?

    <p>It converts each character of a string to its numeric code</p> Signup and view all the answers

    What is the purpose of the accumulator variable in the decoder?

    <p>To append each decoded character to the end of the message</p> Signup and view all the answers

    What is the output of the expression ord('a')?

    <p>97</p> Signup and view all the answers

    What is the purpose of the for loop in the encoder?

    <p>To iterate over each character in the message</p> Signup and view all the answers

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