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 void(*fnptr)(void);
void run_state_sequence(int start) {
    
    fnptr table[] = {
        state_init,
        state_load,
        state_execute,
        state_exit

    };
    for(int i= 0 ; i < 3 ; i++)
    {
        int indx = (start + i ) % 4;
        table[indx]();
        
        if(i < 2)
        {
            printf("\n");
        }
    }
}

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