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"); }

// Your logic here
void run_state_sequence(int start) {
    const size_t func_ptr_arr_size = 4;
    const size_t num_of_ites = 3;

    // declare func ptr array
    void (*func_ptr_arr[func_ptr_arr_size])() = {state_init, 
                                state_load, 
                                state_execute, 
                                state_exit};

    int idx = start;
    for (int i = 0; i < num_of_ites; i++)
    {
        idx = (start + i) % func_ptr_arr_size; // wrap around the array

        func_ptr_arr[idx]();

        if (i < num_of_ites - 1)
        {
            printf("\n");
        }
    }
}

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

Solving Approach