Chapter 6

Question 1

What does the power function look like?

Answer 1

pow(2.0, 3.0) = 2^3 = 8
Raises a (first) number to a (second) power.

Question 2

Of what type is the power function?

Answer 2

Double

Question 3

What does the square root function look like?

Answer 3

sqrt(4) = 2

Takes the square root of a function

Question 4

Of what type is the square root function?

Answer 4

Double

Question 5

What does the floor function?

Answer 5

This function calculates the largest whole number that is less than or equal to X.
floor(48.79) = 48.0 (Or it rounds down)

Question 6

Of what type is the floor function?

Answer 6

Double

Question 7

What libraries do all functions need to use?

Answer 7

include

Question 8

What are the two categories of user-defined functions?

Answer 8

Value returning functions and Void functions

Question 9

What is a value returning function?

Answer 9

Functions that have a return type. These functions return the value of a certain data type using the return statement.

Question 10

What is a void function?

Answer 10

Functions that do not have a return type. These functions do not use a return statement to return a value.

Question 11

What are the three ways to use value returning functions?

Answer 11

1. Save for further calculation.
2. Use the value in some calculation.
3. Print the value.

Question 12

What is suggested about the value returning statement?

Answer 12

The returning function is used in an assignment statement as the parameter in a function call, and in an output statement.

Question 13

What are the first 4 properties that form the function header?

Answer 13

1. The names of the function
2. The number of parameters is any
3. The data type of each parameter
4. The data type of the value returned by the function.

Question 14

What is the 5th property of the function called?

Answer 14

The body.

Question 15

What is the body?

Answer 15

the code within the function needed to do the task.

Question 16

What are these five properties called together?

Answer 16

Definition of the function

Question 17

A variable declared in the function heading is called?

Answer 17

Formal parameter

Question 18

A variable or expression listed in a function call?

Answer 18

Actual parameter

Question 19

What is the syntax of a value-returning function?

Answer 19

functionType functionName(formal parameter list) 
{
Statements or code;
}

Question 20

What is another name for function type?

Answer 20

Data type.

Question 21

What is the syntax to call a value-returning function?

Answer 21

functionName (actual paramenter list)

Question 22

What is a value returning function called?

Answer 22

An expression?

Question 23

What is the syntax of the return statement?

Answer 23

return expression;

Question 24

In C++ return is a reserved word true or false?

Answer 24

True

Question 25

What is local declaration?

Answer 25

Declaration of a variable within a block of code for use ONLY within that block.

Question 26

What is a function prototype?

Answer 26

A function heading without any body for that function

Question 27

Is the function prototype a definition?

Answer 27

NO

Question 28

What does a function prototype promise?

Answer 28

That a full definition will appear later in the function.

Question 29

What happens if you do not write a definition?

Answer 29

May compile but will not execute

Question 30

What is a function prototype syntax?

Answer 30

functioType functionNames (paramenter list);