C++ Switch Cases -

i doing quiz online based on c++ switch statement. came across question , have fair understanding of how switch statements work 1 question made absolutely no sense me. can please explain?

why answer d , not c? case 2: default case or what? quiz can found at: http://www.cprogramming.com/tutorial/quiz/quiz5.html

here's how code behaves.

• x equal 0
  • so cout<<"zero"; executed.
• since there's no break; after it,
  • the second case executed: cout<<"hello world";

and since cout<<"something"; doesn't add newline after printing, they're printed single word.