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"); }

// Your logic here
void run_state_sequence(int start) {
    // Implement using function pointer array
    void (*state_ptr[])(void) = { 
        state_init, state_load, state_execute, state_exit
    };

    int loop_counter = 0;
    while (loop_counter < 3) {
        // Get index from start by clamping it to [0-3]
        int index = start % 4;

        // Call function
        state_ptr[index]();

        // Print a new line
        printf("\n");

        // Increment start to next index
        start++;
        loop_counter++;
    }
}

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