Possibility Toggle Language Prog

Programming language specific toggle example on the OOP file.

- Does not include:
Listener to remember the selected after page refresh

Javascript has to be changed to its own specific file rather than on the .md itself.

Author: VerzatileDev

docs/Concepts/OOP.md

@@ -11,7 +11,27 @@ has_children: false
 
 {% include under_construction.html %}
 
+<div id="cppContent">
+  <!-- Your default C++ content goes here -->
+  This is C++ content for Object-Oriented Programming.
+</div>
 
-<br>
+<div id="csharpContent" style="display:none;">
+  <!-- Your C# content goes here -->
+  This is C# content for Object-Oriented Programming.
+</div>
 
-<br>
+<button onclick="showContent('cpp')">C++</button>
+<button onclick="showContent('csharp')">C#</button>
+
+<script>
+  function showContent(language) {
+    if (language === 'cpp') {
+      document.getElementById('cppContent').style.display = 'block';
+      document.getElementById('csharpContent').style.display = 'none';
+    } else if (language === 'csharp') {
+      document.getElementById('cppContent').style.display = 'none';
+      document.getElementById('csharpContent').style.display = 'block';
+    }
+  }
+</script>