https://chengaoshen.com/en/tags/c/ Recent content in C on ChengAo Shen Hugo en Mon, 30 May 2022 00:00:00 +0000 https://chengaoshen.com/en/posts/c_pointer_declarations/ Mon, 30 May 2022 00:00:00 +0000 https://chengaoshen.com/en/posts/c_pointer_declarations/ <h2 id="1-common-declarations"> 1. Common Declarations <a class="heading-link" href="#1-common-declarations"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h2> <ul> <li> <p><code>int a</code>: Declares <code>a</code> as an integer variable.</p> </li> <li> <p><code>int const a</code>: Declares a constant integer <code>a</code> (cannot be modified).</p> </li> <li> <p><code>int *a</code>: Can be understood as &ldquo;<code>*a</code> is an integer&rdquo;, so <code>a</code> is a pointer to an integer.</p> </li> <li> <p><code>int **a</code>: Since &ldquo;<code>**a</code> is an integer&rdquo;, <code>a</code> is a pointer to a pointer to an integer.</p> </li> </ul> <blockquote> <p>Note: <code>int *a, b;</code> declares <code>a</code> as a pointer to an integer, but <code>b</code> is just an integer—not a pointer.</p>