<p>안녕하세요?</p>
<p></p>
<p>&lt;코드&gt;</p>
<p>여기서</p>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">struct</span>&nbsp;{</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">bool</span>&nbsp;option1&nbsp;:&nbsp;<span style="color: #b5cea8;">1</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//unsigned&nbsp;long&nbsp;long&nbsp;:&nbsp;0;</span></div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">bool</span>&nbsp;option2&nbsp;:&nbsp;<span style="color: #b5cea8;">1</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">unsigned</span>&nbsp;<span style="color: #569cd6;">long</span>&nbsp;<span style="color: #569cd6;">long</span>&nbsp;option3&nbsp;:&nbsp;<span style="color: #b5cea8;">1</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;bbf;</div>
<br />
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">printf</span>(<span style="color: #ce9178;">"%zu&nbsp;bytes</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span>,&nbsp;<span style="color: #569cd6;">sizeof</span>(bbf));</div>
<br />
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">memset</span>((<span style="color: #569cd6;">char</span>*)&amp;bbf,&nbsp;<span style="color: #b5cea8;">0x00</span>,&nbsp;<span style="color: #569cd6;">sizeof</span>(bbf));</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">print_binary</span>((<span style="color: #569cd6;">char</span>*)&amp;bbf,&nbsp;<span style="color: #569cd6;">sizeof</span>(bbf));</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">bbf</span>.<span style="color: #9cdcfe;">option1</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">1</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">bbf</span>.<span style="color: #9cdcfe;">option2</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">1</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">bbf</span>.<span style="color: #9cdcfe;">option3</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">1</span>;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">print_binary</span>((<span style="color: #569cd6;">char</span>*)&amp;bbf,&nbsp;<span style="color: #569cd6;">sizeof</span>(bbf));</div>
<br />
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">printf</span>(<span style="color: #ce9178;">"%zu&nbsp;bytes</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span>,&nbsp;<span style="color: #569cd6;">sizeof</span>(bbf));</div>
</div>
<p>&nbsp;이렇게 출력되는 이유가 예전에 설명해주신 리틀엔디안 방식이라서 그런건가요?</p>
<p></p>
<p><img src="https://cdn.inflearn.com/public/files/posts/e21a11f5-d7fa-4497-8f00-22562a6c1c8b/%EB%B9%84%ED%8A%B8%ED%95%84%EB%93%9C1.jpg" width="741" height="110" alt="" /></p>
<p>감사합니다.</p>
<p></p>

<p>빅엔디안을 써본게 워낙 오래전이라 (거의 10년 전에 슈퍼컴퓨터) 비교 실험을 못해봤지만 맞을겁니다. 같은 코드를 빅엔디안 시스템에서 돌려보면 확실하겠지요.&nbsp;</p>

인프런 커뮤니티 질문&답변

[05:42] 비트필드 패딩