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"); }

typedef struct {
    void (*function) (void);
}operation_t;

operation_t func_handler[] {
    {state_init},
    {state_load},
    {state_execute},
    {state_exit}
};

// Your logic here
void run_state_sequence(int start) {
    for (int i=0; i<3; i++) {
        func_handler[start].function();
        start = (start + 1) % 4;
        printf("\n");
    }
}

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