Scripting and Programming - Foundations - C173 UPDATED ACTUAL
Questions and CORRECT Answers
What is an editor? A program that allows you to write code
What is a compiler? A program that produces other programs. The compiler does all the work at once
and then runs the new program. We're translating the code we wrote to computer
code all at once. This is often when we produce an .exe (executable) file.
What is an interpreter? A program that runs code one line at a time. Instead of converting all of the code
at once it runs each line as it's needed. It interprets that specific line from your
code to computer code.
What is an operator and what does it do? An operator takes two operands (values) and does something with them. It is an
object capable of manipulating a value. If it is a comparison or logical operator it
would compare to see if they are similar or dissimilar. If it is a mathematical
operator it would perform mathematical calculations.
What is an expression? something that has a value.
What is the difference in a terminal and non-terminal A terminal is a final value, while a non-terminal can be reduced further.
expression?
What is proper Python grammar for making an Expression → Expression Operator Expression
expression? The Expression non-terminal that appears on the left side can be replaced by an
Expression, followed by an Operator, followed by another Expression. For
example, 1 + 1 is an Expression Operator Expression.
What is a variable? a name that refers to a value
, What are the three main types of data covered? How do string is a sequence of characters surrounded by quotes, either single or double
you declare each one? example: myVar = "string data"
Integer is a number example: myVar = 33
Boolean is a true or false value example: myVar = True
What is grammar used for in programming? In a programming language like Python, the code must match the language
grammar exactly. When programming language grammar is not followed the
interpreter will return a Syntax Error message. This means that the structure of the
code is inconsistent with the rules of the programming language.
How do you change the value of a variable with Python? Using the = character to assign a new value
x=6
x=9
print x # would print out 9
How to do you join multiple variables together with string Using the + sign to concatenate the values
data in Python? What is this called?
What does it mean to index a string? How do you do that This is what we call selecting a sub-sequence of a string. You do this in Python by
with Python code? specifying the character you want to access by its index position. Index position
begins at 0. For example, this code would print out the letter J:
name = 'John'
print name[0]
What does it mean to slice a string? How do you do that Slicing is simply obtaining a subset of data from a string. You may have also heard
with Python code? this called string extraction. You do this in Python by specifying the index position
where you want to begin and where you want to end. Everything from the starting
point up until the end point will be extracted. For example, this code would print
out "Jo":
name = 'John'
print name[0:2]
+ concatenate or add
= assignment
* multiply
- subtract
/ divide
% Modulos, does division and returns the remainder
What does the * operator do when applied to string It writes out the string data multiple times. For example, print '!' * 12 would output
data? !!!!!!!!!!!! (12 exclamation points).
What does a procedure do? takes in inputs, does some processing, and produces outputs
Questions and CORRECT Answers
What is an editor? A program that allows you to write code
What is a compiler? A program that produces other programs. The compiler does all the work at once
and then runs the new program. We're translating the code we wrote to computer
code all at once. This is often when we produce an .exe (executable) file.
What is an interpreter? A program that runs code one line at a time. Instead of converting all of the code
at once it runs each line as it's needed. It interprets that specific line from your
code to computer code.
What is an operator and what does it do? An operator takes two operands (values) and does something with them. It is an
object capable of manipulating a value. If it is a comparison or logical operator it
would compare to see if they are similar or dissimilar. If it is a mathematical
operator it would perform mathematical calculations.
What is an expression? something that has a value.
What is the difference in a terminal and non-terminal A terminal is a final value, while a non-terminal can be reduced further.
expression?
What is proper Python grammar for making an Expression → Expression Operator Expression
expression? The Expression non-terminal that appears on the left side can be replaced by an
Expression, followed by an Operator, followed by another Expression. For
example, 1 + 1 is an Expression Operator Expression.
What is a variable? a name that refers to a value
, What are the three main types of data covered? How do string is a sequence of characters surrounded by quotes, either single or double
you declare each one? example: myVar = "string data"
Integer is a number example: myVar = 33
Boolean is a true or false value example: myVar = True
What is grammar used for in programming? In a programming language like Python, the code must match the language
grammar exactly. When programming language grammar is not followed the
interpreter will return a Syntax Error message. This means that the structure of the
code is inconsistent with the rules of the programming language.
How do you change the value of a variable with Python? Using the = character to assign a new value
x=6
x=9
print x # would print out 9
How to do you join multiple variables together with string Using the + sign to concatenate the values
data in Python? What is this called?
What does it mean to index a string? How do you do that This is what we call selecting a sub-sequence of a string. You do this in Python by
with Python code? specifying the character you want to access by its index position. Index position
begins at 0. For example, this code would print out the letter J:
name = 'John'
print name[0]
What does it mean to slice a string? How do you do that Slicing is simply obtaining a subset of data from a string. You may have also heard
with Python code? this called string extraction. You do this in Python by specifying the index position
where you want to begin and where you want to end. Everything from the starting
point up until the end point will be extracted. For example, this code would print
out "Jo":
name = 'John'
print name[0:2]
+ concatenate or add
= assignment
* multiply
- subtract
/ divide
% Modulos, does division and returns the remainder
What does the * operator do when applied to string It writes out the string data multiple times. For example, print '!' * 12 would output
data? !!!!!!!!!!!! (12 exclamation points).
What does a procedure do? takes in inputs, does some processing, and produces outputs
