57. State Machine Using Function Pointers

#include <stdio.h>

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


void run_state_sequence(int start) {
   void (*f[4])(void ) = 
    {&state_init, &state_load, &state_execute,&state_exit} ; 
    for(int i = 0; i <3; i++){
    f[((start+i)%4)  ]();
    printf("\n")   ;
}


}

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