CS3376 Structures

struct Employee { string name; int idNum; }; In this declaration, idNum is

a member

Which of the following assigns a value to the hourlyWage member of employee[2]?

employee[2].hourlyWage = 100.00;

A declaration for an enumerated type begins with this key word

enum

enum Tree { OAK, MAPLE, PINE }; What is the value of the following relational expression? OAK > PINE

false

You may use a pointer to a structure as a

function parameter, structure member, or function return type

Passing a structure as a constant reference parameter to a function

guarantees not to result in changes to the structure's members

This is required after the closing brace of the structure declaration.

semicolon

enum Tree { OAK, MAPLE, PINE }; In memory, what value will the MAPLE enumerator be stored as?

1

If a is a structure variable and p, a pointer, is a member of the structure, what will the following statement do? cout << *a.p;

Output the dereferenced value pointed to by p

struct Employee { string name; int idNum; }; In this declaration, Employee is

a tag

Data types that are created by the programmer are known as

abstract data types (ADTs)

This describes only the general characteristics of an object.

abstraction

Members of a(n) __ union have names, but the union itself has no name.

anonymous

When a structure is passed __ to a function, its members are not copied.

by reference

A structure __ contain members of the same data type.

can

Which of the following statements outputs the value of the gpa member of element 1 of the student array?

cout << student[1].gpa;

Before a structure can be used, it must be

declared

If an anonymous union is declared globally (outside all functions), it must be

declared static

If Circle is a structure tag, the statement Circle *pcirc;

declares a structure pointer called pcirc

This allows you to access structure members

dot operator

With an enumerated data type, the enumerators are stored in memory as

integers

What does bookList[2].publisher[3] = 't'; do?

it stores the character 't' in the fourth element of the publisher member of booklist[2].

A function __ return a structure.

may

The name of the structure is referred to as its

none of these

If Circle is a structure tag, the statement Circle doSomething(Circle c2) can be the header line for a function that

takes a Circle structure as a parameter, does something, and returns a Circle structure

A structure pointer contains:

the address of a structure variable

To dereference a structure pointer, the appropriate operator is

the structure pointer operator, ->

A good reason to pass a structure as a constant reference is

to prevent changes to the structure members

This is like a structure, except all members occupy the same memory area.

union

These are examples of C++ primitive data types

unsigned short int, long double, unsigned char