diff --git a/.gitmodules b/.gitmodules
index 71c5721..d6f32b0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -30,3 +30,7 @@
 	path = examples/keyword/clangtidy/sillycode
 	url = ssh://git@focs.ji.sjtu.edu.cn:2222/FOCS-dev/JOJ3-examples.git
 	branch = keyword/clangtidy/sillycode
+[submodule "examples/cppcheck/sillycode"]
+	path = examples/cppcheck/sillycode
+	url = ssh://git@focs.ji.sjtu.edu.cn:2222/FOCS-dev/JOJ3-examples.git
+	branch = cppcheck/sillycode
diff --git a/examples/cppcheck/sillycode b/examples/cppcheck/sillycode
new file mode 160000
index 0000000..8b4a93f
--- /dev/null
+++ b/examples/cppcheck/sillycode
@@ -0,0 +1 @@
+Subproject commit 8b4a93f53cabc271269dcecbe073cfc0ab38d010