D is a systems programming language. Its focus is on combining the power and high performance of C and C++ with the programmer productivity of modern languages like Ruby and Python. Special attention is given to the needs of quality assurance, documentation, management, portability and reliability.
If you are familiar with coding in C then coding in D is not going to be a far stretch. You can check out the main site to see a huge code sample which looks identical to C at first glance, but after a deeper look you will be able to see some immediate differences. If you are dying to give a different yet familiar coding language a try, you may want to consider D.