What is Cryptos code?

Could you please explain what is meant by "Cryptos code"? Is it a specific type of programming language or just a general term? If it's a language, how does it differ from other coding languages? Also, what kind of applications does Cryptos code have in the realm of cryptocurrency and finance? Is it essential for developing secure and efficient blockchain systems? And finally, how does one learn to program using Cryptos code? Thank you for clarifying these points for me.