Unit #4

Which of the following best describes an expression?

• An expression evaluates to a single value.

• An expression always contains a variable.

• An expression must include a function call.

• An expression changes the value of a variable.

What is the primary purpose of an assignment operator?

• An assignment operator creates a new variable.

• An assignment operator changes the value represented by a variable.

• An assignment operator deletes a variable.

• An assignment operator evaluates a Boolean expression.

What is a variable in programming?

• A variable is a type of function.

• A variable is a sequence of characters.

• A variable is a Boolean expression.

• A variable is a named reference to a value.

What is a string?

• A string is a numeric value.

• A string is an ordered sequence of characters.

• A string is a Boolean expression.

• A string is a function call.

What is a Boolean value?

• A Boolean value is a numeric value.

• A Boolean value is either true or false.

• A Boolean value is a string of characters.

• A Boolean value is a complex expression.

What do comparison operators do in programming?

• Comparison operators indicate a Boolean expression.

• Comparison operators change the value of a variable.

• Comparison operators create new variables.

• Comparison operators evaluate to a string.

What is the result of using logical operators?

• Logical operators evaluate to a numeric value.

• Logical operators create new variables.

• Logical operators evaluate to a Boolean value.

• Logical operators change the value of a string.

What is the role of a conditional statement in programming?

• A conditional statement executes different statements based on a Boolean expression.

• A conditional statement always executes all statements.

• A conditional statement evaluates to a string.

• A conditional statement creates a new variable.

What is a function in programming?

• A function is a type of variable.

• A function is a Boolean expression.

• A function is an assignment operator.

• A function is a named group of programming instructions.

What does a function call do?

• A function call creates a new function.

• A function call changes the value of a variable.

• A function call evaluates a Boolean expression.

• A function call executes the code within a function.