Generalize data sources through variables.
Determine the result of code segments
Learning Objective: Represent a value with a
variable.
AAP-1.A.1
A variable is an abstraction inside a program
that can hold a value. Each variable has
associated data storage that represents
one value at a time, but that value can be a
list or other collection that in turn contains
multiple values.
AAP-1.A.2
Using meaningful variable names helps
with the readability of program code and
understanding of what values are represented
by the variables.
AAP-1.A.3
Some programming languages provide types
to represent data, which are referenced using
variables. These types include numbers,
Booleans, lists, and strings.
AAP-1.A.4
Some values are better suited to
representation using one type of datum rather
than another.
Learning Objective: Determine the value of a variable as a result of an
assignment.
AAP-1.B.1
The assignment operator allows a program to
change the value represented by a variable.
AAP-1.B.2
The exam reference sheet provides the “ ”
operator to use for assignment. For example,
Text:
a ← expression
evaluates expression and then assigns a
copy of the result to the variable a.
AAP-1.B.3
The value stored in a variable will be the most
recent value assigned. For example:
a ← 1
b ← a
a ← 2
display(b)
still displays 1