A programming language is a type of code that contains a set of commands, instructions and other syntax used to create a software programme or script for computers to execute.
Back end technologies are server-side programming languages i.e. focused on driving a server, an application or a database, and consist of languages like PHP, Ruby, Python, Java and Perl.
By contrast, front end languages are client-side i.e. drive applications that the user interacts with directly e.g. the design interface. That could be an app running in a web browser, a desktop application, or a native application on a mobile device.
C programming language is one of the most popular and widely used programming languages. It is a general-purpose programming language and one of the main advantages of programming in C# is that it allows the programmer to write directly to memory.