State Machine Using Function Pointers

Code

#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 (*state_fptr)(void);

const int seq_cnt = 3;
const int max_states = 4;
state_fptr state_func_table[4] = {&state_init, &state_load,
                                  &state_execute, &state_exit};

// Your logic here
void run_state_sequence(int start) {
    // Implement using function pointer array
    for(int i = 0; i < seq_cnt; i++)
    {
        state_func_table[start]();
        start = (start + 1) % max_states;
        printf("\n");
    }
}

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

Solving Approach