Merge pull request #525 from bdzyq/master

C实现

Author: youngyangyang04

problems/0203.移除链表元素.md

@@ -146,8 +146,39 @@ public:
 
 
 ## 其他语言版本
+C:
+```c
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     struct ListNode *next;
+ * };
+ */
 
 
+struct ListNode* removeElements(struct ListNode* head, int val){
+    typedef struct ListNode ListNode;
+    ListNode *shead;
+    shead = (ListNode *)malloc(sizeof(ListNode));
+    shead->next = head;
+    ListNode *cur = shead;
+    while(cur->next != NULL){
+        if (cur->next->val == val){
+            ListNode *tmp = cur->next;
+            cur->next = cur->next->next;
+            free(tmp);
+        }
+        else{
+            cur = cur->next;
+        }
+    }
+    head = shead->next;
+    free(shead);
+    return head;
+}
+```
+
 Java：
 ```java
 /**