Embedding a case label in an if…else statement

Question

G++ accepts this code and it behaves as I\'d expect it to:

#include 

void example (int value, bool condition) {

  switch (value) {
  case 0:         


        

Answer 1

As far as C++ is concerned (draft N3936):

• case and default labels in themselves do not alter the flow of control, which continues unimpeded across such labels.
• Usually, the substatement that is the subject of a switch is compound and case and default labels appear on the top-level statements contained within the (compound) substatement, but this is not required.(§ 6.4.2 - 6)
• It is possible to transfer into a block, but not in a way that bypasses declarations with initialization. (§ 6.7 - 3)

What you are doing is technically ok, of course that doesn't mean you should.