AP Computer Science Principles Exam Reference Sheet Quiz
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Questions and Answers

What does the 'DISPLAY()' function do?

  • Accepts input values from the user
  • Performs arithmetic operations on two variables
  • Displays the value of an expression (correct)
  • Generates and returns a random integer

    • In the expression '17 MOD 5', what does the result evaluate to?

  • 2 (correct)
  • 3
  • 0
  • 5

    • What is the result of '17 / 5' according to the given text?

  • 4.3
  • 2.5
  • 3
  • 3.4 (correct)

    • What does the 'RANDOM(a, b)' function do?

    <p>Generates and returns a random integer from a to b</p> Signup and view all the answers

    Which operators are used to perform arithmetic operations on variables 'a' and 'b'?

    <p>+, -, *, /</p> Signup and view all the answers

    What is the purpose of the relational operators '=' and '≠'?

    <p>To compare equality or inequality between values</p> Signup and view all the answers

    Study Notes

    Instruction Text

    • a ← expression assigns a copy of the result of the expression to the variable a.
    • DISPLAY(expression) displays the value of the expression, followed by a space.
    • INPUT() accepts a value from the user and returns the input value.

    Arithmetic Operators and Numeric Procedures

    • Arithmetic operators (+, *, /, etc.) perform arithmetic operations on a and b.
    • a MOD b evaluates to the remainder when a is divided by b.
    • The MOD operator has the same precedence as other operators.
    • The order of operations used in mathematics applies when evaluating expressions.

    Random Number Generation

    • RANDOM(a, b) generates and returns a random integer from a to b.
    • Each result is equally likely to occur.

    Relational and Boolean Operators

    • Relational operators: =, ≠, &gt;, &lt;, ≥, and ≤.
    • These operators are used to compare values.

    Order of Operations

    • The order of operations used in mathematics applies when evaluating expressions.
    • This means that expressions are evaluated in the following order: parentheses, exponents, multiplication and division, and addition and subtraction.

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    Description

    Test your knowledge of the AP Computer Science Principles Exam Reference Sheet for Fall 2020. Questions cover topics like assignment, display, and input statements in pseudocode.

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