To use goto or not?

Question

This question may sound cliched, but I am in a situation here.

I am trying to implement a finite state automaton to parse a certain string in C. As I started writin

Answer 1

I would use a variable that tracks what state you are in and a switch to handle them:

fsm_ctx_t ctx = ...;
state_t state = INITIAL_STATE;

while (state != DONE)
{
    switch (state)
    {
    case INITIAL_STATE:
    case SOME_STATE:
        state = handle_some_state(ctx)
        break;

    case OTHER_STATE:
        state = handle_other_state(ctx);
        break;
    }
}