57. State Machine Using Function Pointers

#include <stdio.h>

void state_init()    { printf("Init\n"); }
void state_load()    { printf("Load\n"); }
void state_execute() { printf("Execute\n"); }
void state_exit()    { printf("Exit\n"); }

void state_0() {state_init(); state_load(); state_execute();};
void state_1() {state_load(); state_execute(); state_exit();};
void state_2() {state_execute(); state_exit(); state_init();};
void state_3() {state_exit(); state_init(); state_load();};

// Your logic here
void run_state_sequence(int start) {
    // Implement using function pointer array
    start %= 4;
    void (*fp[4])() = {state_0, state_1,state_2,state_3};
    fp[start]();
}

int main() {
    int start;
    scanf("%d", &start);
    run_state_sequence(start);
    return 0;
}