#include <stdio.h>
#include <stdlib.h>

// ENUM
// Canonical
//enum State { START, RUNNING, STOPPED };
// Readable, structured alternative to using integers as magic numbers.
// HW08:  You will use enum to track the type of a node (int, string, list)
//
// Concise:
typedef enum { START, RUNNING, STOPPED } State;

// Canonical
union Value {
    int   as_int;
    char* as_string;
    Node* as_list;
};

int main(int argc, char* argv[]) {
    State current_state = START;

    while(current_state != STOPPED) {
        // do something
    }

    union Value v = { .as_int = 5 };
    printf("v.as_int == %d\n", v.as_int);

    return EXIT_SUCCESS;
}
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