[TOC] ```c++ #include <stdio.h> #include <unistd.h> enum { GET_UP = 0, GO_TO_SCHOOL, HAVE_LUNCH, GO_HOME, DO_HOMEWORK, SLEEP, }; enum { EVENT1 = 1, EVENT2, EVENT3, }; typedef struct FsmTable_s { int event; //事件 int CurState; //当前状态 void (*eventActFun) (); //函数指针 int NextState; //下一个状态 }FsmTable_t; void GetUp() { // do something printf("xiao ming gets up!\n"); } void Go2School() { // do something printf("xiao ming goes to school!\n"); } void HaveLunch() { // do something printf("xiao ming has lunch!\n"); } void DoHomework() { // do something printf("xiao ming does homework!\n"); } void Go2Bed() { // do something printf("xiao ming goes to bed!\n"); } FsmTable_t XiaoMingTable[] = { //{到来的事件，当前的状态，将要要执行的函数，下一个状态} { EVENT1, SLEEP, GetUp, GET_UP }, { EVENT2, GET_UP, Go2School, GO_TO_SCHOOL }, { EVENT3, GO_TO_SCHOOL, HaveLunch, HAVE_LUNCH }, { EVENT1, HAVE_LUNCH, DoHomework, DO_HOMEWORK }, { EVENT2, DO_HOMEWORK, Go2Bed, SLEEP }, //add your codes here }; typedef struct FSM_s { FsmTable_t* FsmTable; //指向的状态表 int curState; //FSM当前所处的状态 }FSM_t; int g_max_num; //状态表里含有的状态个数 //状态机注册 void FSM_Regist(FSM_t* pFsm, FsmTable_t* pTable) { pFsm->FsmTable = pTable; } void FSM_StateTransfer(FSM_t* pFsm, int state) { pFsm->curState= state; } //事件处理 void FSM_EventHandle(FSM_t* pFsm, int event) { FsmTable_t* pActTable = pFsm->FsmTable; void (*eventActFun)() = NULL; int NextState; int CurState = pFsm->curState; int flag = 0; int i; for (int i = 0; i < g_max_num; i++) { //当且仅当当前状态下来个指定的事件，我才执行它 if (event == pActTable[i].event && CurState == pActTable[i].CurState) { flag = 1; eventActFun = pActTable[i].eventActFun; NextState = pActTable[i].NextState; break; } } if (flag) { if (eventActFun) { eventActFun(); } FSM_StateTransfer(pFsm, NextState); } else { //do nothing } } //初始化FSM void InitFsm(FSM_t* pFsm) { g_max_num = sizeof(XiaoMingTable) / sizeof(FsmTable_t); pFsm->curState = SLEEP; FSM_Regist(pFsm, XiaoMingTable); } //测试用的 void test(int *event) { if (*event == 3) { *event = 1; } else { (*event)++; } } int main() { FSM_t fsm; InitFsm(&fsm); int event = EVENT1; //小明的一天,周而复始的一天又一天，进行着相同的活动 while (1) { printf("event %d is coming...\n", event); FSM_EventHandle(&fsm, event); printf("fsm current state %d\n", fsm.curState); test(&event); sleep(1); //休眠1秒，方便观察 } return 0; } ``` ：https://www.cnblogs.com/skyfsm/p/7071386.html