The C++ transformation converts Platform-Independent Model (PIM) elements to language-specific C++ Class elements.
The transformation converts the PIM model types to C++ types and creates encapsulation according to your options for creating properties from C++ attributes; that is, producing the getters and setters according to the rules you have defined on the C++ Specifications page of the Options dialog. Note that the public attributes in the PIM are converted to private attributes in the PSM. All operations in the interface are transformed into pure virtual methods.
The Platform-Independent Model (PIM)
After transformation, becomes the PSM