For Dummies C++, 6th Edition 978-0-470-31726-6 用户手册

xiii

Keeping a Member Function After Class .................................................. 176
Overloading Member Functions ................................................................ 178

Declaring Arrays of Objects ....................................................................... 181
Declaring Pointers to Objects .................................................................... 182

Dereferencing an object pointer ...................................................... 183
Pointing toward arrow pointers ....................................................... 184

Passing Objects to Functions ..................................................................... 184

Calling a function with an object value ........................................... 185
Calling a function with an object pointer ....................................... 186
Calling a function by using the reference operator ....................... 188

Why Bother with Pointers or References? ............................................... 189
Returning to the Heap ................................................................................. 189

Allocating heaps of objects .............................................................. 190

Comparing Pointers to References ............................................................ 191
Linking Up with Linked Lists ...................................................................... 191

Performing other operations on a linked list ................................. 192
Hooking up with a LinkedListData program ................................... 193

A Ray of Hope: A List of Containers Linked to the C++ Library ............. 196

Protecting Members .................................................................................... 197

Why you need protected members ................................................. 197
Discovering how protected members work ................................... 198

Making an Argument for Using Protected Members ............................... 200

Protecting the internal state of the class ........................................ 200
Using a class with a limited interface .............................................. 201

Giving Nonmember Functions Access to Protected Members .............. 201

Creating Objects .......................................................................................... 205
Using Constructors ...................................................................................... 206

Constructing a single object ............................................................. 207
Constructing multiple objects .......................................................... 208
Constructing a duplex ....................................................................... 209

Dissecting a Destructor .............................................................................. 211

Why you need the destructor .......................................................... 211
Working with destructors ................................................................. 212

Outfi tting Constructors with Arguments .................................................. 217

Using a constructor ........................................................................... 218

Placing Too Many Demands on the Carpenter: 

Overloading the Constructor ................................................................. 220

Defaulting Default Constructors ................................................................ 222