#include <stdio.h>
#include <string.h>

int main(void) {
        int foobar[2];

        foobar[0] = 0x11223344;
        foobar[1] = 0x55667788;

        switch (*((unsigned char *)&foobar)) {
                case 0x11:
                        printf("big endian\n");
                        break;
                case 0x44:
                        printf("little endian\n");
                        break;
                default:
                        printf("weird endianness\n");
        }

        printf("0x%08x, &foobar: %p\n", 'abcd', &foobar);
        *(int *)((char *)&foobar + 3) = 0x11223344;

        return 0;
}


leah$ gcc foo.c -o foo
foo.c:21:41: warning: multi-character character constant
leah$ ./foo
big endian
0x61626364, &foobar: 0x7fdffffe968
leah$ uname -a
FreeBSD leah.org 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 06:53:42 UTC 2010     root@araz.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  sparc64