https://ai-blog.noorshomelab.dev/tags/dynamic-allocation/Recent content in Dynamic Allocation on AI VOIDHugoenMon, 03 Nov 2025 01:00:00 +0000https://ai-blog.noorshomelab.dev/c-programming-guide/memory-management/Mon, 03 Nov 2025 01:00:00 +0000https://ai-blog.noorshomelab.dev/c-programming-guide/memory-management/<h1 id="chapter-7-memory-management-malloc-calloc-realloc-free">Chapter 7: Memory Management: <code>malloc</code>, <code>calloc</code>, <code>realloc</code>, <code>free</code></h1> <p>Up until now, all the variables we&rsquo;ve used have been allocated automatically by the compiler in either <strong>static memory</strong> (for global variables) or the <strong>stack</strong> (for local variables and function parameters). This is sufficient for many tasks, but it has limitations:</p> <ul> <li><strong>Fixed Size:</strong> Stack-allocated arrays (like <code>int arr[10];</code>) must have their size known at compile time.</li> <li><strong>Limited Lifetime:</strong> Stack variables are automatically destroyed when their function exits.</li> </ul> <p><strong>Dynamic Memory Allocation</strong> allows your program to request memory from the operating system during runtime (when the program is executing) from an area called the <strong>heap</strong>. This memory persists until explicitly deallocated or the program ends. This is crucial for:</p>