Podcast
Questions and Answers
What does the 'DISPLAY()' function do?
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?
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?
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?
What does the 'RANDOM(a, b)' function do?
Which operators are used to perform arithmetic operations on variables 'a' and 'b'?
Which operators are used to perform arithmetic operations on variables 'a' and 'b'?
What is the purpose of the relational operators '=' and '≠'?
What is the purpose of the relational operators '=' and '≠'?
Study Notes
Instruction Text
a ← expression
assigns a copy of the result of the expression to the variablea
.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 ona
andb
. a MOD b
evaluates to the remainder whena
is divided byb
.- 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 froma
tob
.- Each result is equally likely to occur.
Relational and Boolean Operators
- Relational operators:
=
,≠
,>
,<
,≥
, 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.