大端小端问题

typedef union {
    unsigned short value;
    unsigned char bytes[2];
}Test;

int main(void)
{
    Test test_vaule;
    test_vaule.value = 0x1234;

    if (test_vaule.bytes[0] == 0x12 &&
            test_vaule.bytes[1] == 0x34)
        printf ("big ending\n");
    else
        printf ("small ending\n");

    return 0;
}