57. State Machine Using Function Pointers

#include <stdio.h>

#define MAX 4
typedef void(*fun_ptr)();
void state_init()    { printf("Init"); }
void state_load()    { printf("Load"); }
void state_execute() { printf("Execute"); }
void state_exit()    { printf("Exit"); }

// Your logic here
void run_state_sequence(int start) {
    // Implement using function pointer array
    fun_ptr f[] = {state_init, state_load, state_execute,state_exit};
    int count = 3;
    while(count--)
    {
        f[start]();
        printf("\n");
        start++;
        if(start >= MAX)
        start = (start % MAX);
    }
}

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