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How are objects defined?
- By their attributes
- By operations than can be performed on them
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Object
- A real/physical or imaginary thing
- E.g Person, Bank Account, Address etc
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Class
- Set of objects with the same properties
- Forms the blueprint of an object
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Client
Creates class objects and manipulates them with public operations
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Accessor
Can only view values of data members
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Modifier
Can view and/or change data members
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Constructor
Used to build and initialize an object
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Types of constructor
- Default: Data members initialized with default values
- Constructor with arguments
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What happens if no constructor is included?
Data members are not initialized
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Operators that always work with user-defined objects
- Assignment "=" - Assigns each data member of an object
- Dot"." - Used to access class members
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Two parts of a class
- Interface (.h)
- Implementation (.cc)
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Struct/record
A class where all data members are declared public
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Compiler directive, to prevent excess copies/code
- // In the header file
- #ifndef CLASSNAME_H
- #define CLASSNAME_H
...
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What is, "::"
- The scope resolution operator
- Used as a prefix to each function name in the header
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Accessor methods should be...
- constant (const)
- const className& object //in header and parameters
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static members
- Are the same across all instances of a class
- Usual members are limited to each instance
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Declaring, and using static objects
- Declaration: static member
- Accesssing: className::member
- where member refers to a method or datamember
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