Encapsulation:

when u used format specifiers, public, private and protected. Basically u r defining scopes so encapsulating them.

Data Abstraction:

But when once u have made ur porgram, you dont give ur code to ur user but exe. so here ur hiding ur data .. this is often said as data abstraction.

so as a recall

PRIVATE PUBLIC = encapsulation

EXE not CODE = data abstraction.