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

// Define union type 'Number'
union Number {
    int as_int;
    double as_double;
};  // <<<< SEMICOLON <<<<

enum NumberType {
    NUMBER_INT,    // 0
    NUMBER_DOUBLE  // 1
};

void print_number_value(union Number n, enum NumberType type_of_n) {
    if(type_of_n == NUMBER_INT) {
        printf("%d\n", n.as_int);
    }
    else if(type_of_n == NUMBER_DOUBLE) {
        printf("%f\n", n.as_double);
    }
}

int main(int argc, char* argv[]) {

    printf("Declare and initialize n to 5 (as an int).\n");
    union Number n = { .as_int = 5 };
    enum NumberType type_of_n = NUMBER_INT;
    print_number_value(n, type_of_n);

    printf("\n");
    printf("Set n to 0.25 (as a double).\n");
    n.as_double = 0.25;
    type_of_n = NUMBER_DOUBLE;
    print_number_value(n, type_of_n);

    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */