Using goto as the only loop construct is too easy, you can statically know where your code is going all the time. It would be more fun to use setjmp longjmp fro

Using goto as the only loop construct is too easy, you can statically know where your code is going all the time. It would be more fun to use setjmp longjmp from C, where you can dynamically assign where a label is pointing to, and it works across scopes.