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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Methods (C++) - functions that run on an object
Object Orientation: Individual Objects example from a Well House Consultants training course
More on Object Orientation: Individual Objects [link]

This example is described in the following article(s):
   • Naming blocks of code, structures and Object Orientation - efficient coding in manageable chunks - [link]

Source code: develop.cpp Module: Q906
#include <iostream>
using namespace std;

class Table { // Define the API
        public:
                Table(float, float);
                Table(float);
                float getarea();
                float getwidth();
                float getdoggie();
        private:
                float width;
                float height;
        };

Table::Table(float width, float height) { // Constructor
        this->width = width;
        (*this).height = height;
        }

Table::Table(float width) { // Constructor
        this->width = this->height = width;
        this->height *= 2.0;
        }

float Table::getarea() { // Sample use of object
        return width * height /1000.0 / 1000.0;
        }

float Table::getwidth() {
        return width;
        }

float Table::getdoggie() {
        float rv;
        rv = ((this->width > this->height) ?
                this->height : this-> width ) /2.0;
        return rv;
        }

main () {
        Table dining(1200.0,1500.0); // Create demo objects
        Table lounge(1300.0);

        float tsize = dining.getarea(); // Use object
        cout << "Size of table " << tsize << endl;
        cout << dining.getwidth() << endl;
        tsize = lounge.getarea();
        cout << "Size of table " << tsize << endl;

        float reach = dining.getdoggie();
        cout << "Dog Reach " << reach << endl;

}

/* Sample output

munchkin:rcp grahamellis$ ./develop
Size of table 1.8
1200
Size of table 3.38
Dog Reach 600
munchkin:rcp grahamellis$

*/

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Other Examples
This example comes from our "Object Orientation: Individual Objects" training module. You'll find a description of the topic and some other closely related examples on the "Object Orientation: Individual Objects" module index page.

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