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"); }

// Your logic here
void run_state_sequence(int start) {
    int index;
    void (*state_arr[4])() = {state_init, state_load, state_execute, state_exit};
    int size = sizeof(state_arr)/sizeof(state_arr[0]);
    for(int i=0; i<3; i++) {
        index = (start+i)%size;
        state_arr[index]();
}
}
int main() {
    int start;
    scanf("%d", &start);
    run_state_sequence(start);
    return 0;
}