Rejected Quiz related to bitwise operation

Question

my quizes related to basic bitwise operations are rejected, c++ supports bitwise operations and c++ is one of the course, why is it rejected?
this raises question why sololearn doesn't have "C" ?

Answer 1

i didn't post any processor dependant quiz... it was just about performing bitwise << on a number once.
which should be same for any proceesor under the hood

Answer 2

i think bitwise operator depends upon the processor.