Manage code and Unmanaged code

Managed Code:
It is getting from the .Net technologies, managed code we can classify into two types.
(i) Safe Code  (ii) Unsafe Code

Safe Code:
Getting from .Net technology, Unsafe code supports only functions.

Unsafe Code:
Getting from .Net technology, Unsafe code implemented using pointers.

Unmanaged code:
Getting from different languages, which language giving dynamic link libraries that language features we can access in the .Net framework, It doesnt communicates with the CLR.