Satoshi Nakamoto implemented the bitcoin and mined the first bitcoin back in 2009. He implemented the software as open source code that's why many developers have worked for it. Satoshi used C when he first implemented the bitcoin.
Thanks taylorsara. The thing is that Satoshi disappeared didnt he? He did whitepaper - first implementation and then just get out the way? Thats so strange dont you think? WHat about the address he used for that first TX, has been used since then?