Templates

C++ Interface Classes - An Introduction Class hierarchies that have run-time polymorphism as one of their prominent characteristics are a common design feature in C++ programs, and with good design, it should not be necessary for users of a class to be concerned with its implementation details. One of the mechanisms for achieving this objective is the separation of a class's interface from its implementation. Some programming languages, e.g. The much used shape hierarchy example serves well here. The shape abstraction is expressed here as an interface class - it contains nothing but pure virtual function declarations. Now let's assume this hierarchy is to be used in a two dimensional drawing package. Besides the virtual destructor, only one member function of drawing - the add() virtual function - is shown. Having explained the technique of hoisting a class's interface, I need to explain why developers should be interested in doing this. Strengthening the Separation Interface Class Emulation Issues

Tutorial: Building your first website using a free website template (part 1) This is the first in a series of blog posts that will explain how to use a free website template to build and publish a complete website. The series will explain what a website template is, how you download a template, how you use code editing software to make changes in the template and add your own content, how you create multiple pages and add a navigation menu, how you make changes to the design and finally how you publish your website on an own domain so that the world can see it. New posts will be published with a few days in between, allowing the series to be dynamic and include feedback from readers and answers to questions that may come up on the way. To follow this tutorial as new posts are published, you can subscribe to the feed or follow Andreas on Twitter. Feedback, questions and requests can be posted as comments to each entry. Introduction So, you have decided to build a website? But let’s start from the beginning… The first decision to make: The starting point

Variables. Data Types. The usefulness of the "Hello World" programs shown in the previous chapter is rather questionable. We had to write several lines of code, compile them, and then execute the resulting program, just to obtain the result of a simple sentence written on the screen. It certainly would have been much faster to type the output sentence ourselves. However, programming is not limited only to printing simple texts on the screen. In order to go a little further on and to become able to write programs that perform useful tasks that really save us work, we need to introduce the concept of variable. Let's imagine that I ask you to remember the number 5, and then I ask you to also memorize the number 2 at the same time. The whole process described above is a simile of what a computer can do with two variables. We can now define variable as a portion of memory to store a value. Each variable needs a name that identifies it and distinguishes it from the others. Identifiers valid identifier

Abstract Class vs Interface Introduction: There are lost of discussion on the internet about the Interface vs Abstract class. Also, as base class whether we have to use interface, abstract class or normal class. I am trying to point out few considerations on which we can take decision about Interface vs Abstract class vs Class. Abstract Class vs Interface I am assuming you are having all the basic knowledge of abstract and interface keyword. We can not make instance of Abstract Class as well as Interface. Here are few differences in Abstract class and Interface as per the definition. Abstract class can contain abstract methods, abstract property as well as other members (just like normal class). Interface can only contain abstract methods, properties but we don’t need to put abstract and public keyword. //Abstarct Class public abstract class Vehicles private int noOfWheel; private string color; public abstract string Engine get; set; public abstract void Accelerator(); //Interface public interface Vehicles string Engine

36 High Quality Templates & Tutorials To Design Business Website It’s a solid fact that real world companies have been trying very hard to infuse their brand into the web, due to the popularity of the internet. Apple knows about that, Coca-cola knows about that, even local fresh mart near my home knows about that. For giant corporation like Nike, they can probably invest a small part of their fund to hire top-notch web designer to build an epic site, but for small companies without funds and design experience, it will be a crucial challenge for them to get their website existed online with nice design and functionality. This post exists to solve this problem. Meanwhile, you can visit some of our collection posts to get more quality design resources: HTML/CSS Templates Art of Business Designed by Template Monster, Art of Business provides you a completely professional corporate environment to showcase your company and products. Corporattica Euphoria First High Technologies Just as its name suggests, IT Technologies is perfect for company related with tech.

Fast Accurate Memory Test Suite | Netrino by Michael Barr If ever there was a piece of embedded software ripe for reuse it's the memory test. This article shows how to test for the most common memory problems with a set of three efficient, portable, public-domain memory test functions. One piece of software that nearly every embedded developer must write at some point in his career is a memory test. At first glance, writing a memory test may seem like a fairly simple endeavor. The purpose of a memory test is to confirm that each storage location in a memory device is working. Of course, a memory test like the one just described is necessarily destructive. Common memory problems Before implementing any of the possible test algorithms, you should be familiar with the types of memory problems that are likely to occur. The one type of memory chip problem you could encounter is a catastrophic failure. In my experience, the most common source of actual memory problems is the circuit board. Electrical wiring problems Figure 1. Table 1.

C++ Language Tutorial This website uses cookies. By continuing, you give permission to deploy cookies, as detailed in our privacy policy. ok Search: Not logged in C++ Language These tutorials explain the C++ language from its basics up to the newest features introduced by C++11. Introduction Compilers Basics of C++ Program structure Compound data types Classes Other language features C++ Standard Library Input/Output with files Tutorials C++ LanguageAscii CodesBoolean OperationsNumerical Bases C++ Language Introduction:CompilersBasics of C++:Program structure:Compound data types:Classes:Other language features:Standard library:Input/output with files Create A Template Create A Template You can create your own templates or you can use ready-made templates that are included in OpenOffice. This tutorial will explain the various choices for "Paragraph Styles" to make your own templates and how to make a new default template. A template is used as the basis for creating other documents. Some of the things that you can do with your template would be choosing between this size or smaller letters, having pictures or not, and having one column or two column pages. After making your choices, save the document as a template to use to create a new document with the same styles. Click File > New > Templates and Documents > Templates. At the top of the window, click on the Character Styles If you save your file at this point, it will contain not only what you typed but also the original styles and the modified styles. Click File > Templates > Save. In the New template box, type a name for your template. Click Yes. Click Yes. Click Organizer.

CRC Implementation Code in C | Netrino by Michael Barr CRCs are among the best checksums available to detect and/or correct errors in communications transmissions. Unfortunately, the modulo-2 arithmetic used to compute CRCs doesn't map easily into software. I'm going to complete my discussion of checksums by showing you how to implement CRCs in software. For most software engineers, the overwhelmingly confusing thing about CRCs is their implementation. Modulo-2 binary division Before writing even one line of code, let's first examine the mechanics of modulo-2 binary division. Figure 1. The modulo-2 division process is defined as follows: Call the uppermost c+1 bits of the message the remainder Beginning with the most significant bit in the original message and for each bit position that follows, look at the c+1 bit remainder: If the most significant bit of the remainder is a one, the divisor is said to divide into it. The final value of the remainder is the CRC of the given message. Bit by bit Listing 1. Code clean up Listing 2.

TBB Tutorial This document gives a quick example of how to use Intel's Thread Building Blocks, by means of a simple example. The example is available as a tarball here. The files are also available as syntax-highlighted HTML here (fatals.* and hrtime.h are elided). The latter portion of this document assumes the reader is following along using the syntax-highlighted Makefile and main.C. Installing Thread Building Blocks Log into the machine on which you would like to use TBB (this example uses an eight-processor x86-based machine called clover-01), and create a directory in which your TBB install will reside (you do NOT need root permissions on your machine). Get the open-source TBB tarball from (select the Commercial Aligned Release). Use tar to unpack the files: clover-01(1)% cd ~/ clover-01(2)% mkdir tbb clover-01(3)% cd tbb clover-01(4)% cp $DOWNLOADS/tbb20_20070815oss_src.tar.gz . clover-01(7)% gmake gmake -C ". TBB's Programming Model Writing Serial Code

OPOS & Microsoft .NET An Microsoft .NET application wishing to utilize retail devices has at least two available approaches. OPOS via COM Interop Microsoft .NET's COM interoperability support allows straightforward integration of the OPOS Common Control Objects into .NET applications. One can directly reference COM objects, and Visual Studio will build the required interoperability layer. Alternatively, available below are OPOS CCO interoperability assemblies created by the Microsoft TLBIMP utility. A typical .NET POS application will include the following in its software stack. Application. The pre-built assemblies plus a sample application may be found below. POS for .NET Microsoft's Point of Service for .NET is currently at version 1.12. To download, search this page for "POS for .NET". The UnifiedPOS specification contains an appendix that describes the POS for .NET relationship to UnifiedPOS. Application startup: Instantiate the OPOS POSPrinter assembly's class and wire the StatusUpdateEvents.

Basic Input/Output The example programs of the previous sections provided little interaction with the user, if any at all. They simply printed simple values on screen, but the standard library provides many additional ways to interact with the user via its input/output features. This section will present a short introduction to some of the most useful. C++ uses a convenient abstraction called streams to perform input and output operations in sequential media such as the screen, the keyboard or a file. stream is an entity where a program can either insert or extract characters to/from. The standard library defines a handful of stream objects that can be used to access what are considered the standard sources and destinations of characters by the environment where the program runs: Standard output (cout) On most program environments, the standard output by default is the screen, and the C++ stream object defined to access it is cout. Multiple insertion operations (<<) may be chained in a single statement: