C is a general-purpose computer programming language used for operating systems, libraries, games and other high performance work. It is clearly distinct from C++. It was developed in 1972 by Dennis Ritchie for use with the Unix operating system.
CSS (Cascading Style Sheets) is a style sheet language used for describing the look and formatting of HTML (Hyper Text Markup Language) and XML (Extensible Markup Language) documents including (but not limited to) colors, layout, and fonts.
Structured Query Language (SQL) is a language for querying databases. Questions should include code examples, table structure, sample data, [SQL Fiddle](http://sqlfiddle.com) and a tag for the DBMS implementation (e.g. MySQL, PostgreSQL, Oracle, MS SQL Server, IBM DB2) being used. If your question relates to a specific DBMS (uses specific extensions/features), use that DBMS's tag instead. Answers to questions tagged with SQL should use ANSI SQL.
The .NET framework is a software framework designed mainly for the Microsoft Windows operating system. It includes an implementation of the Base Class Library, Common Language Runtime (commonly referred to as CLR) and Dynamic Language Runtime. It supports many programming languages, including C#, VB.NET, F# and C++/CLI.
MySQL is a freely available open source Relational Database Management System (RDBMS) that uses Structured Query Language (SQL). If your issue relates to MySQLi, use the MySQLi tag instead.
DO NOT use this tag unless you are addressing Apple's iPhone and/or iPod touch specifically. For questions not dependent on hardware, use the tag "iOS". Another tag to consider is "cocoa-touch" (but not "cocoa"). Please refrain from questions regarding the iTunes App Store or about iTunes Connect. If using C#, tag with mono.
An array is an ordered data structure consisting of a collection of elements (values or variables), each identified by one (single dimensional array or vector) or multiple indexes.
ASP.NET is a Microsoft web application development framework that allows programmers to build dynamic web sites, web applications and web services.
This tag should be used only on questions that are about Objective-C features or depend on code in the language. The tags "cocoa" and "cocoa-touch" should be used to ask about Apple's frameworks or classes. Use the related tags [ios] and [osx] for issues specific to those platforms.
Ruby on Rails is an open source full-stack web application framework written in Ruby. It follows the popular MVC framework model and is known for its "convention over configuration" approach to application development.