The Default Constructor

The default constructor constructs an object for which no initial value is given.
Prototype
```
    Type::Type();
```
The default constructor is used in the following situations.
- To create an object with no initial value specified.
- To initialize the members of an array.
The default constructor should initialize the data members to values that are valid for that type.
The Automatic Default Constructor
- Allocates memory for the data members.
- Invokes each data member's default constructor.
- Is provided automatically if we write no constructor.
- Is not provided if we write any constructor.
Example - DefaultConstructorTest.cpp, vector.h (original), vector.h(copy) , vector.cpp

This page was last modified on Feb 2, 2001

URL: http://people.hsc.edu/faculty-staff/robbk/Coms262/Lectures/DefaultConstructor.html