Foundations of Programming: Variables and Expressions
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Questions and Answers

Which of these are fundamental concepts of imperative programming?

  • Object-oriented programming
  • Selection (correct)
  • Sequence (correct)
  • Iteration (correct)
  • Code in Python and most other programming languages is executed in sequence.

    True

    What is the purpose of the print() function in Python?

    To output text to the console or a file.

    In Python, a string is enclosed in ______.

    <p>single or double quotation marks</p> Signup and view all the answers

    What will the following command print: print(32 + 10)?

    <p>42</p> Signup and view all the answers

    Which of the following statements is true about built-in functions in Python?

    <p>Python has approximately 150 built-in functions.</p> Signup and view all the answers

    What will the following command print: print(2 * 6 + 4 - 1 * 4)?

    <p>12</p> Signup and view all the answers

    The print() function can combine text and calculations in its output.

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

    In Python, a piece of text sent to the print statement is called a ______.

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

    Study Notes

    About Programming

    • Programming is built on three fundamental concepts: Sequence, Selection, and Iteration.
    • Storing data and performing calculations are essential components of programming.
    • While basic concepts can solve many programming tasks, additional features in languages like Python simplify complex tasks.

    Sequence

    • Code execution generally follows a linear sequence, meaning instructions run one after the other.
    • While it's possible to "jump" between program parts (e.g., function calls), these processes also adhere to a sequence.
    • The flow of execution can impact how data is processed and operations performed.

    Instructions

    • Programs consist of instructions that can be classified as statements and expressions.
    • Expressions perform calculations whereas statements execute actions (e.g., the print() function).
    • Instructions are combined in various ways to form a complete program.

    The print() Instruction

    • In Python, print() serves as both a statement and a function; it is crucial for outputting data.
    • About 150 built-in functions exist in Python, each following a naming convention that starts with a lowercase letter, followed by parentheses for input data.
    • Strings in Python are enclosed in single or double quotes, though single quotes are preferred for ease of typing.

    Making Calculations with print()

    • The print() function can also be utilized to display computation results, showcasing its versatility beyond simple text output.
    • Example calculations include arithmetic operations such as addition, multiplication, and division.

    Combining Output

    • Python allows combining text with calculations, strings, and variables for diverse output formats.
    • Commas are used in print() to merge outputs, automatically inserting spaces between them for clarity.

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    Description

    This quiz covers the fundamental concepts of programming, focusing on variables, expressions, and arithmetic operations. Explore data types, input reading, and type conversion to enhance your understanding of how programming works.

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