diff --git a/.gitignore b/.gitignore
index 83d7d2e1..65bfdc79 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,4 +35,4 @@
 build/
 
 # cache folder
-.cache/
\ No newline at end of file
+.cache/
diff --git a/examples/tree/tree.cc b/examples/tree/tree.cc
new file mode 100644
index 00000000..86007a91
--- /dev/null
+++ b/examples/tree/tree.cc
@@ -0,0 +1,18 @@
+#include "../../src/classes/tree/tree.h"
+
+int main() {
+  tree<int> t; 
+  t.insert("", 10);
+  t.insert("r", 15);
+  t.insert("l", 20);
+  t.insert("rr", 13);
+  t.insert("rrr", 12);
+  t.insert("rrl", 11);
+
+  std::vector<int> ino = t.inorder();
+  for(auto & x : ino){
+    std::cout << x << " ";
+  }
+  std::cout << '\n';
+  t.visualize();
+}
diff --git a/examples/tree/unnamed.dot b/examples/tree/unnamed.dot
new file mode 100644
index 00000000..35455419
--- /dev/null
+++ b/examples/tree/unnamed.dot
@@ -0,0 +1,7 @@
+digraph Tree {
+10->20
+10->15
+15->13
+13->11
+13->12
+}