使用转到实施状态机往往是有道理的。如果你真的关心使用goto语句，一个合理的选择往往是有一个状态变量，您修改和开关基于语句：

Using a goto for implementing a state machine often makes good sense. If you're really concerned about using a goto, a reasonable alternative is often to have a state variable that you modify, and a switch statement based on that:

typedef enum {s0,s1,s2,s3,s4,...,sn,sexit} state;

state nextstate;
int done = 0;

nextstate = s0;  /* set up to start with the first state */
while(!done)
   switch(nextstate)
      {
         case s0:
            nextstate = do_state_0();
            break;
         case s1:
            nextstate = do_state_1();
            break;
         case s2:
            nextstate = do_state_2();
            break;
         case s3:
             .
             .
             .
             .
         case sn:
            nextstate = do_state_n();
            break;
         case sexit:
            done = TRUE;
            break;
         default:
            /*  some sort of unknown state */
            break;
      }