C# (pronounced as "see sharp") is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. It was developed by Microsoft within its .NET initiative and later approved as a standard by Ecma (ECMA-334) and ISO (ISO/IEC 23270:2006). C# is one of the programming languages designed for the Common Language Infrastructure. 

C# is a general-purpose, object-oriented programming language. Its development team is led by Anders Hejlsberg. The most recent version is C# 7.0, which was released in 2017 along with Visual Studio 2017. 

The ECMA standard lists these design goals for C#: 

During the development of the .NET Framework, the class libraries were originally written using a managed code compiler system called "Simple Managed C" (SMC). In January 1999, Anders Hejlsberg formed a team to build a new language at the time called Cool, which stood for "C-like Object Oriented Language". Microsoft had considered keeping the name "Cool" as the final name of the language, but chose not to do so for trademark reasons. By the time the .NET project was publicly announced at the July 2000 Professional Developers Conference, the language had been renamed C#, and the class libraries and ASP.NET runtime had been ported to C#.
What is C#?
How is it pronounced?
What company is developed it?
Who approved it?
What was it designed for?
What is the newest version of it?
What was it released with?
What did Anders Hejlsberg do?
What did they call it at that time?
What did that stand for?
What year was that?
Why did they change the name?
When did they announce it to the public?
Where at?
Did they have a new name by then?
A multi-paradigm programming language.
a multi-paradigm programming language
See sharp.
see sharp
Microsoft.
Microsoft 
Ecma.
Ecma 
The Common Language Infrastructure.
 the Common Language Infrastructure. 
C# 7.0.
C# 7.0
Visual Studio 2017.
Visual Studio 2017. 
Formed a team to build a new language.
formed a team to build a new language at the time called Cool
Cool.
Cool
"C-like Object Oriented Language".
"C-like Object Oriented Language".
1999.
1999
Trademark reasons.
trademark reasons.
July 2000.
July 2000
The Professional Developers Conference.
Professional Developers Conference
Yes.
the language had been renamed C#