#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "log_macros.h"

union Value {
    int   as_int;
    char* as_string;
};
// A union object can contain only one of the fields; they share the same space.

void print_element(Value the_value) {
    if(…) {  // We cannot know what type the_value is without another parameter.
        printf("the_value is %d\n", the_value.as_int);
    }
    else {
        printf("the_value is %s\n", the_value.as_string);
    }
}

int main(int argc, char* argv[]) {
    union Value v = { .as_int = 5 };
    enum ValueType v_type = TYPE_INT;
    v.as_int = 7;

    v.as_string = "apple";
    
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */