diff --git a/README.md b/README.md
index a0d6bcd..30f6e09 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,25 @@
 detect cpu isa features with single-file
 
 <table>
-<tr><td>CPU arch</td><td> &#9989; x86, x86-64<br/>&#9989; arm, aarch64</td></tr>
+<tr><td>CPU arch</td><td> &#9989; x86, x86-64<br/>&#9989; arm, aarch64</td><td rowspan=3>
+  
+```c
+#define RUAPU_IMPLEMENTATION
+#include "ruapu.h"
+
+int main()
+{
+    // initialize ruapu once
+    ruapu_cpu_init();
+
+    // now, tell me if this cpu has avx2
+    int has_avx2 = ruapu_cpu_supports("avx2");
+
+    return 0;
+}
+```
+
+</td></tr>
 <tr><td>OS</td><td>&#9989; Windows<br/>&#9989; Linux<br/>&#9989; macOS<br/>&#9989; Android<br/>&#9989; iOS</td></tr>
 <tr><td>Compiler</td><td>&#9989; GCC<br/>&#9989; Clang<br/>&#9989; MSVC</td></tr>
 </table>