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 (*fp[4]) () = {state_init,state_load,state_execute,state_exit}; 
// Your logic here
void run_state_sequence(int start) {
    int counter = 0;
    int i=start;
    const int max_it =3;

    while(counter!=max_it)
    {
        fp[i]();

        printf("\n");

        i++;

        counter++;

        if(i>max_it)
        {
            i=0;
        }
    }

}

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