diff --git a/problems/0024.两两交换链表中的节点.md b/problems/0024.两两交换链表中的节点.md
index 66e149e6..b285b2d4 100644
--- a/problems/0024.两两交换链表中的节点.md
+++ b/problems/0024.两两交换链表中的节点.md
@@ -86,6 +86,34 @@ public:
 
 ## 其他语言版本
 
+C:
+```
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     struct ListNode *next;
+ * };
+ */
+
+
+struct ListNode* swapPairs(struct ListNode* head){
+    //使用双指针避免使用中间变量
+    typedef struct ListNode ListNode;
+    ListNode *fakehead = (ListNode *)malloc(sizeof(ListNode));
+    fakehead->next = head;
+    ListNode* right = fakehead->next;
+    ListNode* left = fakehead;
+    while(left && right && right->next ){
+        left->next = right->next;
+        right->next = left->next->next;
+        left->next->next = right;
+        left = right;
+        right = left->next;
+    }
+    return fakehead->next;
+}
+```
 
 Java：