programming-for-dummies

538
Using Objects
To create an object, you must create a separate class stored in a class file. A
typical class looks like this:
class className
{
public:
datatype propertyname;
void methodname();
};
The class lists one or more properties and the type of data that property can
hold, such as an integer or floating point number. A class also lists one or
more method names, which contains code for manipulating an object in
some way. The class defines the method name and its parameter list, but the
actual code for that method appears outside the class definition, such as
class className
{
public:
datatype propertyname;
void methodname();
};
void classname::methodname()
{
Commands;
}
After you define a class, you can create an object from that class by declaring
a variable as a new class type, such as
className objectname;
So if you created an animal class, you could create an object
(things_at_the_zoo) from that class as follows:
animal things_at_the_zoo;
The C++ language allows both single and multiple inheritance. With single
inheritance, you can declare a class name and state the class to inherit from
with a colon, such as
class className : public classtoinheritfrom
{
// Code goes here
};