C is one of the most important and widely used of all programming languages. It is a powerful language that can be used not only to build general-purpose applications but also to write "low-level" programs that interact very closely with the computer hardware.
C lets the programmer do things that many other languages do not. This means that good C programmers are able to write clever, efficient code. However, there is a downside: while many other languages, such as C# or Java, may try to protect you from writing dangerous code that could crash your programs, C often lets you write just about any code you want-even allowing you to code in mistakes that will end in disaster. In some ways, developing in C is the programming equivalent of a high-wire act-without a safety net.