https://cge.dev/tags/gnu-c-extensions/ Recent content in GNU C Extensions on cge.dev Hugo en Sat, 01 Feb 2025 22:15:16 -0800 https://cge.dev/posts/array-initialization-with-ranges-in-c/ Mon, 01 Jul 2024 00:00:00 +0000 https://cge.dev/posts/array-initialization-with-ranges-in-c/ <div class="notice note"> <div class="notice-title"> <i class="fa-solid fa-sticky-note" aria-hidden="true"></i>Note </div> <div class="notice-content">This post is part of a new series of short-form posts titled <strong><a href="https://cge.dev/series/today-i-learned/" >Today I learned</a></strong>. These posts are intended to be short and more informal—my goal is for you to learn one thing quickly.</div> </div> <p><strong><a href="https://cge.dev/series/today-i-learned/" >Today I learned</a></strong> there is a <a href="https://gcc.gnu.org/onlinedocs/gcc/C-Extensions.html" class="external-link" target="_blank" rel="noopener">GNU C extension</a> for <a href="https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html" class="external-link" target="_blank" rel="noopener">designated initializers</a> that makes it possible to initialize a <em>range</em> of elements in an array.</p> <p> <a href="images/range-example.webp"> <img src="images/range-example.webp" alt="range-example" class="center" /> </a> </p> <p>If you happen to be using GCC (or another compatible compiler that supports this GNU extension, like Clang), you can specify a <em>range</em> (<code>[first ... last]</code>) in the designated initializer list.</p>