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"); }

typedef void (*State)();
void run_state_sequence(int start) {
    State Machine[6] = {
        state_init, 
        state_load, 
        state_execute, 
        state_exit,
        state_init,
        state_load,
        };
    for(int i=0; i<3; i++){
        Machine[start + i]();
    }
}

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