diff --git a/problems/链表理论基础.md b/problems/链表理论基础.md
index da5a1b02..9dc45242 100644
--- a/problems/链表理论基础.md
+++ b/problems/链表理论基础.md
@@ -241,6 +241,16 @@ impl<T> ListNode<T> {
 ```
 
 
+### C:
+
+```c
+typedef struct ListNodeT {
+    int val;
+    struct ListNodeT next;
+} ListNode;
+```
+
+
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