Question 1

All programming languages support four broad data types.

Accepted Answer

Different programming languages support a variety of data types, and the number and nature of these data types can vary significantly between languages.

Question 2

Because one memory location can be used repeatedly with different values,you can write program instructions once and then use them for thousands of separate calculations

Accepted Answer

This statement describes the fundamental principle of programming where code (program instructions) can be executed multiple times with different input values, allowing for efficient reuse and versatile calculations without needing to rewrite the instructions for each new calculation.

Question 3

Programmers generally write programs as one long series of steps.

Accepted Answer

Programmers typically write programs in a structured and modular way, breaking down the program into smaller, manageable pieces or functions to improve readability, maintainability, and reusability.

Question 4

Modularization makes it harder for multiple programmers to work on a problem.

Accepted Answer

Modularization breaks down a problem into smaller, manageable parts, allowing multiple programmers to work on different modules simultaneously, thus facilitating collaboration and parallel development.

Question 5

When you write programs,you work with data in three different forms: ____.

Accepted Answer

Variables are symbolic names associated with values. Literals (or unnamed constants) are explicit data values (e.g., numbers, strings) used in programs. Named constants are variables with fixed values that do not change during the execution of a program.

Question 6

The assignment operator has left-to-right-to-left associativity,which means that the value of the expression to the left of the assignment operator is evaluated first and that the result is assigned to the operand on the right.

Accepted Answer

The assignment operator has right-to-left associativity, meaning the value of the expression to the right of the assignment operator is evaluated first and then assigned to the variable on the left.

Question 7

A specific numeric value is often called a(n)____.

Accepted Answer

A numeric constant refers to a specific numeric value used in programming and mathematical expressions. It is a fixed value that does not change.

Question 8

In most programming languages,before you can use any variable,you must include a ____ for it.

Accepted Answer

A declaration is required to inform the compiler about the variable's name and type before its first use.

Question 9

Most modern programming languages require that program statements be placed in specific columns.

Accepted Answer

Modern programming languages generally do not require program statements to be placed in specific columns; they tend to be free-form, allowing developers to organize code with indentation and spacing for readability, rather than strict column placement.

Question 10

When the first letter of a variable name is uppercase,as in HourlyWage,the format is known as ____ casing.

Accepted Answer

Pascal casing is a naming convention in which the first letter of each word in a variable name is uppercase, except for the first word. This format is often used in object-oriented programming languages, such as Java and C#.

Question 11

A string variable can hold digits such as account numbers and zip codes.

Accepted Answer

A string variable can hold any sequence of characters, including digits, making it suitable for representing account numbers, zip codes, and similar data.

Question 12

Program comments are a type of internal documentation.

Accepted Answer

Program comments are used within the code to explain the functionality, logic, or any important information to developers, acting as a form of internal documentation to make the code more understandable.

Question 13

Declaring a starting value for a variable is known as ____ the variable.

Accepted Answer

Initializing a variable means assigning it an initial value at the time of declaration.

Question 14

A variable's unknown value is commonly called ____.

Accepted Answer

The term "garbage" is often used to describe the unknown or uninitialized state of a variable's value, especially in programming contexts where memory has been allocated but not explicitly initialized.

Question 15

The process of naming program variables and assigning a type to them is called ____ variables.

Accepted Answer

Declaring variables involves naming them and specifying their type, but not necessarily initializing them with a value.

Question 16

In many programming languages,if you declare a variable and do not initialize it,the variable contains an unknown value until it is assigned a value.

Accepted Answer

When a variable is declared but not initialized, it may contain a garbage value (an unknown or unpredictable value) until it is explicitly assigned a value. This behavior can vary between programming languages and their environments.

Question 17

Fractional numeric variables that contain a decimal point are known as ____ variables.

Accepted Answer

Floating-point variables are used to represent numbers that have a fractional part, denoted by the presence of a decimal point.

Question 18

Variable names can be more than one word with blanks between the words.

Accepted Answer

Variable names cannot contain spaces; they must be a single word, often using underscores, camelCase, or other conventions to make them readable if representing multiple words.

Question 19

____ is where a variable's data type or other information is stored as part of the name.

Accepted Answer

Hungarian notation is a naming convention in programming where the name of a variable or function indicates its type or intended use.

Question 20

When the variable starts with a lowercase letter and any subsequent word begins with an uppercase letter,this is called ____.

Accepted Answer

This naming convention is known as camel casing, where the first letter of the first word is lowercase, and the first letter of each subsequent concatenated word is uppercase.

Quiz 2: Elements of High-Quality Programs