C++ Simple Class Implementation using Header

(The following example project was created using Microsoft Visual Studio 2008 Win32 Console Application)

example header (“robot.h”):

//ifndef and define recommended to prevent double compilation
#ifndef ROBOT_H
#define ROBOT_H

//notice methods, variables and properties are defined, but functionality is not specified within
class robot
        robot(); //constructor
        ~robot(); //destructor

        int PublicProperty();

        void DoWork();

        int _privatevalue;



class implementation of header (“robot.cpp”):

#include "StdAfx.h"
#include "robot.h"
#include "cstdlib"
#include "ctime"

#ifndef ROBOT
#define ROBOT

//not necessary to specify class again in this case



int robot::PublicProperty() {
    return _privatevalue;

void robot::DoWork() {
//do something
_privatevalue = "somevalue";

class usage example (“main.cpp”):

#include "stdafx.h"
#include <iostream>
#include "robot.h"

using namespace std;

int main()
robot rtwo; //notice no constructor

rtwo.DoWork(); //change internal private value to "somevalue"
cout << rtwo.PublicProperty(); //should output "somevalue"
int pause;
cin >> pause;

return 0;

About Ronnie Diaz

Ronnie Diaz is a software engineer and tech consultant. Ronnie started his career in front-end and back-end development for companies in ecommerce, service industries and remote education. This work transitioned from traditional desktop client-server applications through early cloud development. Software included human resource management and service technician workflows, online retail e-commerce and electronic ordering and fulfillment, IVR customer relational systems, and video streaming remote learning SCORM web applications. Hands on server experience and software performance optimization led to creation of a startup business focused on collocated data center services and continued experience with video streaming hardware and software. This led to a career in Amazon Prime Video where Ronnie is currently employed, building software and systems which stream live sports and events for millions of viewers around the world.

Posted on June 3, 2011, in Programming & Development and tagged , , , , . Bookmark the permalink. Leave a comment.

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