Question 1

The purpose of the ____ storage class is to extend the scope of a global variable declared in one source code file into another source code file.

Accepted Answer

The `extern` storage class is used to declare a global variable or function in another file, extending its visibility across different source files.

Question 2

A declaration statement that specifically contains the word ____ is different from every other declaration statement in that it does not cause the creation of a new variable by reserving new storage for the variable.

Accepted Answer

The keyword `extern` is used in declaration statements to indicate that the variable is defined elsewhere, not creating or reserving new storage space for this variable in the current scope. It's used to declare a global variable or function in another file.

Question 3

A variable that can store an address is known as a(n) ____ variable.

Accepted Answer

A pointer variable is specifically used to store the memory address of another variable.

Question 4

To use a stored address, C provides us with an indirection operator, ____.

Accepted Answer

The indirection operator in C is "*", which is used to access the value at the address stored in a pointer variable.

Question 5

If numAddr is a pointer, ____ means the variable whose address is stored in numAddr.

Accepted Answer

*numAddr is the correct syntax to access the value at the address stored in the pointer numAddr.

Question 6

The declaration statement ____ declares milesAddr to be a pointer variable that can store the address of (that is, will point to) an integer variable.

Accepted Answer

The correct syntax to declare a pointer variable in C or C++ that can store the address of an integer variable is `int *milesAddr;`. This declares `milesAddr` as a pointer to an integer.

Question 7

Functions that call themselves are referred to as ____ functions.

Accepted Answer

Recursive functions are those that call themselves within their own code, usually with a base condition to prevent infinite recursion.

Question 8

When a function invokes itself, the process is called ____ recursion.

Accepted Answer

Direct recursion occurs when a function calls itself directly.

Question 9

A function can invoke a second function, which in turn invokes the first function; this type of recursion is referred to as ____ recursion.

Accepted Answer

Mutual recursion occurs when two or more functions call each other in a cycle. In this scenario, the first function calls the second, and the second function calls the first, creating a loop of function calls.

Quiz 7: Modularity Using Functions: Part II