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 (*arr[4])()={state_init,state_load,state_execute,state_exit};
    for(int i=0;i<3;i++){
        if(start>3) start=0;
        arr[start]();
        start++;
        printf("\n");}}
int main() {
    int start;
    scanf("%d", &start);
    run_state_sequence(start);
    return 0;
}