prime_gen.h:2:  public: should be indented +1 space inside class PrimeNumberGenerator  [whitespace/indent] [3]
prime_gen.h:19:  An else should appear on the same line as the preceding }  [whitespace/newline] [4]
prime_gen.h:19:  If an else has a brace on one side, it should have it on both  [readability/braces] [5]
Done processing prime_gen.h
Total errors found: 3