Question 1

int x;

Accepted Answer

Fastest integer type (16-32 bits), also short, long, and unsigned

Question 2

char x;

Accepted Answer

8-bit character, '\0' to '\xFF' or -128 to 127

Question 3

double x;

Accepted Answer

64 bit real + or - 1.8e308, 14 significant digits, also float

Question 4

bool x;

Accepted Answer

true or false

Question 5

const T x;

Accepted Answer

Non-modifiable object

Question 6

T f(...) {...}

Accepted Answer

Defines f as a function returning T

Question 7

T* p;

Accepted Answer

Pointer to T (*p is a T object)

Question 8

T a[N];

Accepted Answer

Array of N elements of T, a[0] to a[N-1]

Question 9

static T x;

Accepted Answer

Place x in data segment

Question 10

register T x;

Accepted Answer

(rare) Hint to optimize for speed

Question 11

volatile T x;

Accepted Answer

(rare) x may be modified externally

Question 12

t& y=x;

Accepted Answer

Reference, y is an alias for x, which both have type T

Question 13

How do you include a standard library type and the beginning of the program?

Accepted Answer

#include <header>

Question 14

What standard type must be included at the beginning of the program?

Accepted Answer

using namespace std;

Question 15

istream / iostream

Accepted Answer

Standard input (cin)

Question 16

ostream / iostream

Accepted Answer

Output (cout, cerr, clog)

Question 17

ifstream / fstream

Accepted Answer

Input file

Question 18

ofstream / fstream

Accepted Answer

Output file

Question 19

string / string

Accepted Answer

Sequence of char

Question 20

vector<T> / vector

Accepted Answer

Expandable array/stack of T

Question 21

deque<T> / deque

Accepted Answer

Array/double ended queue

Question 22

list<T> / list

Accepted Answer

List/stack/queue of T

Question 23

map<T1,T2> / map

Accepted Answer

Associative mapping of T1 to T2

Question 24

set<T1> / set

Accepted Answer

A map with keys only

Question 25

pair<T1,T2> / map or utility

Accepted Answer

Two objects of type T1 and T2

Question 26

priority_queue<T> / queue

Accepted Answer

Sorted queue

Question 27

stack<T> / stack

Accepted Answer

Stack

Question 28

bitset<N> / bitset

Accepted Answer

Array of N bool with logical operations

Question 29

valarray<T> / valarray

Accepted Answer

Array with arithmetic operations

Question 30

complex<T> / complex

Accepted Answer

Complex number

Question 31

iterator / (Included with container)

Accepted Answer

Pointer into a container

Question 32

const_iterator / (Included with container)

Accepted Answer

Pointer not allowing element assignment

Question 33

exception / stdexcept, exception

Accepted Answer

Hierarchy of exception types

Question 34

algorithm

Accepted Answer

min(), max(), swap(), sort(), copy(), equal()

Question 35

numeric

Accepted Answer

accumulate(), inner_product()

Question 36

iterator

Accepted Answer

back_inserter()

Question 37

functional

Accepted Answer

equal_to(), less(), bind2nd()

Question 38

new

Accepted Answer

set_new_handler()

Question 39

cstdlib

Accepted Answer

atoi(), atof(), abs(), rand(), system(), exit()

Question 40

cctype

Accepted Answer

isalpha(), isgigit(), tolower(), toupper()

Question 41

cmath

Accepted Answer

sqrt(), log(), exp(), pow(), sin(), cos(), atan()

Question 42

ctime

Accepted Answer

clock(), time()

Question 43

cstring

Accepted Answer

strleng(), memset(), memmove(), memcmp()

Question 44

cstdio

Accepted Answer

printf(), fopen(), getc(), perrer()

Question 45

cassert (debugging)

Accepted Answer

assert()

Question 46

What most important type does C++ allow you to create on your own? Define it.

Accepted Answer

A class is a abstract data structure and an associated set of member functions (methods) and related type declarations which can be associated with the class or instances (objects) of the class. A class is divided into public and private implementations.

Question 47

Define inheritance in one sentence:

Accepted Answer

Inheritance is a hierarchy of classes, and it is used to write a specialized or enhanced version of another class; For example, an ofstream is a type of ostream.

Question 48

Define polymorphism in one sentence:

Accepted Answer

Polymorphism is the technique of coding a common interface for a hierarchy of classes; For example, A child object is allowed wherever a parent object is expected.

Question 49

class T {...};

Accepted Answer

Defines T as a collection of types, objects, and member functions

Question 50

template <class T> ...

Accepted Answer

Defines a set of functions or classes over all T

Question 51

typedf T U;

Accepted Answer

Defines type U is a synonym for T

Question 52

enum T {...};

Accepted Answer

Defines T as an int, and set of int constants

Question 53

struct T {...};

Accepted Answer

Like a class, except default scope of members is public

Question 54

union T {...};

Accepted Answer

A struct with object members overlapping in memory

Question 55

namespace N {...};

Accepted Answer

Defines a scope for a collection of types, objects, and functions

C++ Common Types

The most important types are int, char, bool, and double; also classes. "Quiz 1"

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