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WGU C949 Data Structures & Algorithms Chapters 1-4 Questions and Answers
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WGU C949 Data Structures & Algorithms Chapters 1-4 Questions and Answers
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WGU C949 Data Structures & Algorithms Chapters 1-4Questions and Answers
The interactive interpreter displays a prompt(">>>") CORRECT ANS-(">>>") that indicates
the interpreter is ready to accept code.
Prompt CORRECT ANS-Informs the programmer that the interpreter is ready to accept
commands.
statement CORRECT ANS-A program instruction.
True CORRECT ANS-True or false. A program mostly consists of a series of statements, each
statement usually appears on its own line.
Expression CORRECT ANS-Code that returns a value when evaluated; for example, the
code wage * hours * weeks is an expression that computes a number. * is the symbol for
multiplication. The names wage, hours, weeks, and salary are variables, which are named
references to values stored by the interpreter.
assignment CORRECT ANS-A new variable is created by performing an ___________ using
the = symbol, such as salary = wage * hours * weeks, which creates a new variable called
salary.
print() CORRECT ANS-Displays variables or expression values.
comments CORRECT ANS-#' characters denote ____________, which are optional but can
be used to explain portions of code to a human reader.
print() CORRECT ANS-The primary way to print output is to us the built-in function
_________.
, WGU C949 Data Structures & Algorithms Chapters 1-4
Questions and Answers
string literal CORRECT ANS-Text enclosed in quotes is known as a ...
False CORRECT ANS-True or False. Text in string literals may not have letters, numbers,
spaces, or symbols like "@" or "#".
print('Hello', end = ' ') CORRECT ANS-Multiple print statements will each print on a new
output line. How would you keep the next print's output on the same line separated by a
single space?
True CORRECT ANS-True or False. A string literal can be surrounded by matching single or
double quotes: 'Python rocks!' or "Python rocks!". Good practice is to use single quotes for
shorter strings, and double quotes for more complicated text or text that contains single
quotes (such as print("Don't eat that!")).
"print('Halt!', end = ' ') print('No access!')" CORRECT ANS-Write code that will print "Halt!"
and "No access!" on a single line.
print('Welcome!') CORRECT ANS-Write code that will print: Welcome!
print(num_cars) CORRECT ANS-Given the variable num_cars = 9, write a statement that
prints 9.
"wage = 20 print('Wage:' , wage) #Comma separates multiple items print('Goodbye.')"
CORRECT ANS-"Write code that prints the following: Wage: 20 Goodbye."
You are 22 years old. CORRECT ANS-"Assume variable age = 22 What is the output of
print('You are' , age, 'years old.')"
newline character CORRECT ANS-A new line can also be output by inserting \n, known as a
______________ ___________, within a string literal.
, WGU C949 Data Structures & Algorithms Chapters 1-4
Questions and Answers
input() CORRECT ANS-Reading input is achieved using the ________ function.
num_cars = input() CORRECT ANS-Write a statement that reads a user-entered string into
variable num_cars.
type CORRECT ANS-Determines how a value can behave.
my_var = int('15') CORRECT ANS-Type a statement that converts the string '15' to an
integer, and assigns the result to my_var.
my_var + 5 CORRECT ANS-"Complete the code so that new_var is equal to the entered
number plus 5. my_var = int(input()) new_var = _______"
syntax error CORRECT ANS-A type of error that violates a programming language's rules on
how symbols can be combined to create a program.
In-line, Multiline, Documentation Strings (Docstrings) CORRECT ANS-In Python, there are
three (3) different types of commenting styles. What are they?
In-line CORRECT ANS-"Comments used to add meaning to a program and explain logic in-
line with the code being discussed. These comments are good for quick explanations and are
indicated by using the # character and a space. if n % 2 == 1: # n is odd"
Multiline CORRECT ANS-"Comments, also known as block comments, are good for more
in-depth explanations or when you want to comment a complex section of code. In Python
we append together a section of lines all beginning with the # character to achieve this. # This
section of code # Requires a longer comment # So we can add as many lines as needed"
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