try this

set-standard/index.md

@@ -1,18 +1,18 @@
-# Set C/C++ standard
-
-<<< ./CMakeLists.txt{cmake}
-
-::: code-group
-
-<<< ./src/main1.c
-
-<<< ./src/main2.cpp
-
-:::
-
-```sh
-cmake -B build
-cmake --build build
-```
-
-<iframe frameborder="0" height="500" style="width: 100%" src="https://replit.com/@jcbhmr/cmakebyexampledev-set-standard?embed=1#CMakeLists.txt"></iframe>
+# Set C/C++ standard
+
+<<< ./CMakeLists.txt{cmake}
+
+::: code-group
+
+<<< ./src/main1.c
+
+<<< ./src/main2.cpp
+
+:::
+
+```sh
+cmake -B build
+cmake --build build
+```
+
+<iframe frameborder="0" height="500" style="width: 100%" src="https://replit.com/@jcbhmr/cmakebyexampledev-set-standard?embed=1#CMakeLists.txt"></iframe>

static/CMakeLists.txt

@@ -1,3 +1,3 @@
 cmake_minimum_required(VERSION 3.0)
 project(myproject)
-add_library(mylib STATIC lib.c)
+add_library(mylib STATIC mylib.c)

static/index.md

@@ -1,9 +1,13 @@
 # Build a static library
 
-We can use the `add_library()` function to define a `STATIC` library (`.a`) or [a `SHARED` library (`.so`)].
+We can use the `add_library()` function to define a `STATIC` library (`.a` or
+`.lib`) ora `SHARED` library (`.so` or `.dll`). Check out the [build a shared
+library] example for the `SHARED` counterpart.
 
-<<< ./CMakeLists.txt{cmake}
+<<< ./CMakeLists.txt{3 cmake}
 
-<<< ./lib.c
+<<< ./mylib.c
 
 <iframe frameborder="0" style="width: 100%; height: 500px" src="https://replit.com/@jcbhmr/cmakebyexampledev-static?embed=1"></iframe>
+
+[build a shared library]: /shared/

static/lib.c → static/mylib.c

@@ -1,3 +1,4 @@
+#include <mylib.h>
 int add(int a, int b) {
     return a + b;
 }