C++ examples (example source code) Organized by topic

C++

Qt /

Color Dialog 1 Drag Drop 7

Draw Shape 8 Font Dialog 1

foreach 1 Layout 8

Open File Dialog 2 QAbstractItemModel 1

QAbstractItemView 1 QAbstractListModel 3

QAbstractTableModel 3 QAction 4

QApplication 2 QAssistantClient 1

qBinaryFind 1 QBrush 5

QBuffer 7 QByteArray 1

QCalendarWidget 1 QCheckBox 1

QComboBox 1 QContextMenuEvent 1

qCopyBackward 1 QDataStream 4

QDate 2 QDBusMessage 1

qDebug 2 QDesignerCustomWidgetInterface 2

QDialog 9 QDir 5

QDirModel 1 QDockWidget 2

QDomDocument 3 QDomElement 5

QDomNode 1 QDoubleValidator 1

QDrive 1 QEvent 2

QFile 11 QFileDialog 2

QFileInfo 1 QFocusEvent 1

QFont 3 QFontDatabase 1

QFrame 1 QFtp 2

QGraphicsItem 2 QGraphicsPolygonItem 1

QGraphicsRectItem 1 QGraphicsView 1

QGridLayout 2 QGroupBox 2

QHash 3 QHBoxLayout 1

QImage 6 QImageWriter 1

QInputDialog 5 QKeyEvent 1

QLabel 7 QLayout 2

QLCDNumber 1 QLinearGradient 1

QLineEdit 5 QList 10

QListIterator 1 QListView 4

QListWidget 5 QListWidgetItem 2

qLowerBound 1 QMap 3

QMenu 3 QMessageBox 7

qMin 1 QMouseEvent 5

QMovie 1 QMultiHash 1

QMultiMap 2 QMutableIterators 1

QMutableListIterator 1 QMutexLocker 1

QNetworkAccessManager 3 QObject 2

QPainter 20 QPalette 1

QPen 2 QPixmap 3

QPlainTextEdit 1 QPointer 1

QPrintDialog 1 QPrinter 5

QProcess 4 QProgressBar 1

QPushButton 6 QQueue 1

QRadialGradient 4 QRadioButton 1

QReadWriteLock 1 QRegExp 1

QRegExpValidator 1 QScriptEngine 3

QSemaphore 3 QSet 2

QSignalMapper 1 QSlider 5

qSort 1 QSortFilterProxyModel 2

QSpinBox 5 QSplashScreen 1

QSplitter 3 QSqlDatabase 5

QSqlRelationalTableModel 2 QSqlTableModel 1

QStack 5 QStackedLayout 1

QStackedWidget 2 QStandardItem 1

QStandardItemModel 3 QStatusBar 1

QString 6 QStringList 9

QStringListModel 2 QStyle 4

QSvgWidget 1 QSystemTrayIcon 1

QTabletEvent 1 QTableView 5

QTableWidget 4 QTabWidget 1

QTcpServer 4 QTcpSocket 1

QTest 1 QTextBlockFormat 2

QTextBrowser 1 QTextCharFormat 1

QTextCursor 2 QTextDocument 4

QTextEdit 3 QTextFrame 2

QTextImageFormat 2 QTextList 2

QTextStream 5 QTextTableFormat 1

QThread 5 QTime 1

QTimeLine 1 QTimer 1

QToolBar 1 QTranslator 1

QTreeView 7 QTreeWidget 1

QTreeWidgetItem 1 QUdpSocket 2

QUiLoader 2 QVBoxLayout 2

QVector 4 QWhatsThis 1

QWidget 12 QWindowsStyle 1

QWizard 3 QX11EmbedContainer 1

QX11EmbedWidget 1 QXmlDefaultHandler 2

QXmlStreamWriter 2 Signal 10

Sqlite 1 ToolTip 3

Window 7

List /

list assign 2 list begin end 1

list compare 1 list const_iterator 2

list display 4 list erase 2

list find 2 list insert 6

list iterator 6 list merge 2

list push pop 5 list remove 2

list reverse 1 list sort 2

list splice 4 list swap 1

list unique 3 list 14

String /

char array string 13 string append 2

string array 1 string assign 1

string at 4 string char array 1

string compare 12 string concatenation 4

string copy 4 string data 2

string empty 1 string erase 3

string find 16 string insert 5

string iterator 6 string length 1

string output 3 string read 4

string replace 4 string resize 1

string reverse 6 string search 1

string size 4 string sort 1

string subscript indexer 4 string substr 5

string swap 1 string 8

your string 1

Vector /

object vector 4 vector at 1

vector back 2 vector begin end 2

vector bound 2 vector capacity 2

vector clear 1 vector compare 4

vector count 1 vector definition 3

vector display 2 vector erase 5

vector find 13 vector front 2

vector indexer 4 vector insert 10

vector iterator 7 vector merge 2

vector push pop heap 4 vector reserve 1

vector reverse 2 vector reverse_iterator 1

vector size 4 vector sort 5

vector subscript indexer 7 vector 18

Set Multiset /

difference 6 intersect 3

multiset bound 2 multiset count 2

multiset equal_range 1 multiset erase 6

multiset find 1 multiset insert 3

multiset iterator 2 multiset 4

set begin end 1 set bound range 1

set compare 2 set insert 1

set 7 union 4

Deque /

deque display 1 deque erase 1

deque find 3 deque indexer 1

deque insert 2 deque iterator 2

deque pop 2 deque push 2

deque resize 1 deque reverse 1

deque size 1 deque subscript indexer 3

deque 11

Bitset /

bitset transform 1 bitset 1

Map Multimap /

map compare 2 map display 1

map empty 1 map erase 3

map find 8 map indexer 2

map insert 2 map iterator 8

map search 4 map subscript indexer 1

map update 2 map 12

multimap count 1 multimap insert 2

multimap interator 1 multimap 1

pair 10 transform 3

Valarray /

valarray cshift 1 valarray indexer 1

valarray min max sum 1 valarray resize 1

valarray slice 1 valarray subscript indexer 1

Queue Stack /

priority_queue 9 queue 6

stack 9 your queue 1

STL Basics /

array algorithms 8 array sort 2

back_inserter 2 binary_function 1

container as parameter 4 Function object 1

Memory 1 out_of_range exception 3

parameter constraint 1 predicate 8

template Array 2

STL Algorithms Binary search /

binary_search 3 equal_range 5

lower_bound 1 upper_bound 2

STL Algorithms Min Max /

max 3 max_element 3

min 4 min_element 3

STL Algorithms Heap /

make_heap 3 pop_heap 1

push_heap 2 sort heap 2

STL Algorithms Iterator /

const_interator 3 const_reverse_iterator 1

custom iterater 4 insert_iterator 1

istream iterator 6 iterator 3

reverse_iterator 1 template iterators 2

STL Algorithms Sorting /

custom comparer 2 lexicographical_compare 2

nth_element 5 partial_sort 4

partial_sort_copy 2 qsort 1

sort 15 stable_sort 1

STL Algorithms Merge /

includes 5 inplace_merge 3

merge 9 set_difference 2

set_intersection 3 set_symmetric_difference 3

STL Algorithms Helper /

accumulate 10 adjacent_difference 5

bind1st 1 bind2nd 6

distance 2 divides 4

gslice 1 inner_product 5

make_pair 1 mem_fun_ref 2

multiply 2 negate 3

next_permutation 2 not1 1

numeric_limits 5 partial_sum 6

prev_permutation 3 slice 1

STL Algorithms Modifying sequence operations /

copy 16 copy_backward 2

copy_if 1 fill 4

fill_n 4 generate 6

generate_n 4 iter_swap 2

partition 2 random_shuffle 5

remove 7 remove_copy 2

remove_copy_if 3 remove_if 3

replace if 3 replace 4

replace_copy 2 replace_copy_if 3

reverse 6 reverse_copy 3

rotate 4 rotate_copy 3

stable_partition 2 swap 4

swap_ranges 4 transform 17

unique copy 7 unique 3

STL Algorithms Non modifying sequence operations /

adjacent_find 4 count 7

count_if 1 equal 3

find if 5 find 15

find_end 2 find_first_of 2

for_each 9 mismatch 4

search 2 search_n 2

Class /

Abstract Class 4 Base Class 6

cast 8 Class Access 2

Class Basics 9 Class Member 5

combination 1 Constructor 12

conversion Function 2 Copy Constructor 3

Derived 6 Destructor 8

dynamic_cast 1 Friend 6

Inheritance Multiple 5 Inheritance 12

inline 6 Instance 4

Interface 4 object pointer 12

Polymorphism 5 Private 7

Protected 4 Public 8

static 13 Struct Class 7

template class 18 this 3

Union Class 4 virtual function 21

Overload /

And 1 Assign 5

Boolean Operator 2 Cast 2

Comma 1 Compare 6

Divide 2 Extractor 3

Friend Plus 1 Index 6

Inserter Extractor 6 Inserter 7

Minus Minus 2 Minus 4

New Delete 3 Parenthesis 4

Plus Plus 4 Plus 12

Pointer Operator 1 Product 1

Return Operator 1 Stream Operator 1

Unary Operator 2 Underflow 1

Generic /

Generic Algorithm 2 Generic Class 3

Generic List 1 Generic Queue 1

Generic Stack 2 Template Class 1

Template Overload 3

Console /

cin get 6 cin getline 2

cin ignore 2 cin manipulator 2

cin 9 cout boolalpha 2

cout custom 6 cout fill 6

cout flag status 4 cout flag 1

cout hex 2 cout manipulator 13

cout pcount 1 cout scientific 4

cout setf 8 cout setiosflags 3

cout setw setprecision 4 cout sync clear 2

cout terminator 1 cout uppercase 1

cout width 4 cout 4

ostream iterator 2

Language /

Break 2 Comments 1

Const 1 Do While 3

For 4 If 8

Malloc 1 Mod 1

NameSpace 11 New 8

Operator 19 Prefix postfix 2

Register 1 Static 9

Switch 3 this 2

Throw 15 try catch 14

Using 1 While 8

Development /

Argv Argc 1 command line 2

const cast 4 Dynamic Cast 2

Escape Sequences 3 Exception 12

macro 2 Mutable 1

new delete 4 Random 3

Reinterpret cast 1 static cast 2

Time 4 typeid 10

Data Type /

bit 1 bool output 4

Bool 2 Char Array Function 20

Char Array 5 Char 12

Complex 3 constant 2

Date 1 Decimal 1

double output 8 Double 13

enum 5 float output 7

Float 8 Hexadecimal 11

int output 14 Int 11

Long 4 Octal 1

pointer 4 reference 13

sizeof 2 String 21

Struct 8 Union 3

Data Structure /

Array Object 9 Array Pointer 1

Array Two Dimension 4 Array 8

Bitset 1 Deque 10

List 34 Map 15

Priority Queue 4 Queue 6

Set 3 Sort 1

Stack 2 Valarray 3

Vector Utility 34 Vector 34

File /

Append 2 Array Based IO 3

Binary File 5 Exception Error 1

File Convert 1 File End EOF 3

File Read Write 5 File Read 8

File Size 1 File Status 4

File Utility 15 File Write 3

fstream 6 ifstream 13

istrstream 1 Object Serialization 3

Object Serialize 2 ofstream 14

ostrstream 4 rename 1

Stream iterator 2 String Based IO 1

String stream 3 Text File 10

Function /

Basics 5 Function Adaptor 3

Function Arguments 4 Function Define 1

Function main 1 Function Overloaded 9

Function Parameters 10 Function Pointer 3

Function Prototype 3 Function Recursion 1

Function Return 3 Function Template 16

Function Variables 3 generic parameters 6

Optional Arguments 2 Variable Scope 6

Pointer /

Auto Pointer 2 Pointer Array 7

Pointer Object 4 Pointer Primitive 12