?? fsm.c
字號:
/*
** code snippet demonstrating a finite state machine (FSM)
*/
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;
}
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