Data type and pointer in C++

C++ supports various types of data types, which is categorized into built-in type, derived-type, and user-defined type. Size specifies what type of data or how much memory of that type of value requires.From this, it is clear that for representing various types of data on the computer it is, indeed, necessary to have different datatypes. We know that every datatype has specific size, that is, char has size of 1 byte, integer has 2 byte float has 4 byte and so on. But, the size depends on machine architecture(32-bit, 64-bit)too. Yes, if you declare an integer variable the size would be 2-byte(on a 32-bit machine) and 4-byte(on a 64-bit machine). Same is the case with pointer variable, any type you declare as a pointer it got the memory space depend on the machine. And all the pointer would be of the same size.

Now, see the code

Registration Form using PHP and MySQL

Part 2- Storing form data into the database

In Part 1, you see how to perform a simple form validation using PHP. This is the continuation of the Part 1-Form Validation. After filling the form field, user clicks the submit button. PHP validates form and transfer user entered data to database and redirect the user to a greeting page. For this, we need to create a database using MySQL.

Let's create the database. You must have WAMP in your system. Start the WAMP and, go to phpmyadmin page, login with your credentials.

Then click new on left top. See this image

Now give the database a name and click create. Next create table by entering the table name in the field provided and select number of column you need in your table and click GO. Now in the next page enter column name, Type,Length,etc and click save

Form validation and Registration using PHP MySQL

Part 1: Form Validation

A simple and basic Registration form with necessary(limited) validations. Developed using HTML,PHP and MySQL. PHP used for validating and processing/storing user entered data. Tools used for this project are notepad and WAMP.

Initialy, a simple registration form with five fields is created using HTML <form> tag. See the image of the Registration form.

HTML code:

Refresh webpage automatically/periodically

To refresh/reload your webpage automatically,or refreshing/reloading page periodically, use the &ltmeta&gt tag in your html document.

What is <meta> tag actually...?

The &ltmeta&gt tag provides metadata about your HTML document, such as page description, keywords, author of the document, last modified etc. This data are used by browser, search engines, other web services. In certain cases the webserver uses theses valuesto further define the document content type to the browser. It is a machine parsable tag and will not be displayed by browser on webpages. This tag always put between &lthead&gt...&lt/head&gt. The attributes of this tag are, content,http-equive,scheme,name and charset.

Browser uses the metadata - how to

Pause automatic updates in Windows 10

Microsoft windows 10 automatic updates makes your PC better. It do all the action(downloading updates) in background, means you don't have to worry anything about. Windows downloads important updates and install in your system. For this, OS must restart your system. And you have to wait for completion of installation . This, you don't like, if your in the middle of a busy work. And, also that, for downloading updates it use internet connection. If you are online, doing important browsing or watching online video, make worst .

To overcome this situation there are, two, option. (1)Schedule the update( only Anniversary Updates ) or (2) using Command to suspend the background process.

• First method - schedule the update :
  
  Open Start->Settings
  

Microprocessor frequency

Microprocessor(aka CPU) frequency (clock rate) specifies the operating (internal) frequency of CPU's core. The higher the frequency is for a given CPU family, the faster the processor is. Processor frequency is not the only parameter that affects system performance. Another parameter that greatly affects the performance is CPU efficiency, that is how many Instructions Per Clock (IPC) the CPU can process. Knowing these two parameters it's easy to calculate total number of instructions per second that can be processed by CPU: Frequency x IPC. All modern Microprocessors(AMD x86,Intel microprocessors based P6, mobile and Core micro-architectures) tried to improve their performance by improving the IPC, and, whenever possible, by increasing processor frequency.

The CPU frequency(used as Processor's speed indicator ) is measured in

Doxing

The process of retrieving, hacking and publishing other people's information such as names, addresses, phone numbers and credit card details is Doxing. Doxing may be targeted toward a specific person or an organization. There are many reasons for doxing, but one of the most popular is coercion(the action or practice of persuading someone to do something by using force or threat).

File with extension .lnk, what is this?

A file with extension .lnk. What this means? Is it a virus

.lnk (.LNK)is a Windows file extension. This extension is associated with all shortcuts and Programs in Start Menu items. That is, used for shortcut in Windows to represent an executable file. Software installed in System are stored in a default directory inside a default drive. The shortcuts for the installed programs appeared

Graphene transistor to replace Silicon transistors

Graphene transistor was discovered in 2007 by Professor Andre Geim and his team of researchers at Manchester Centre for Mesoscience and Nanotechnology. A graphene transistor, also known as a single-electron transistor, is a nanotechnology transistor made of a material similar to graphite (allotrope of carbon) and with conductivity and electrical properties much simpler and more efficient than silicon. This single-electron transistor allows one