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

enum foo { FOO };
enum apple { MACINTOSH, CORTLAND, RED_DELICIOUS };
enum orange { NAVEL, CLEMENTINE, TANGERINE };

int
main(int argc, char **argv)
{
    enum foo x;

    if(argc != 1) {
        fprintf(stderr, "Usage: %s\n", argv[0]);
        return 1;
    }

    printf("FOO = %d\n", FOO);
    printf("sizeof(enum foo) = %d\n", sizeof(enum foo));

    x = 127;

    printf("x = %d\n", x);

    /* note we can add apples and oranges */
    printf("%d\n", RED_DELICIOUS + TANGERINE);

    return 0;
}