diff --git a/problems/0541.反转字符串II.md b/problems/0541.反转字符串II.md
index 14b8601a..bf59f52d 100644
--- a/problems/0541.反转字符串II.md
+++ b/problems/0541.反转字符串II.md
@@ -98,8 +98,31 @@ public:
 
 ## 其他语言版本
 
+C：
+
+```c
+char * reverseStr(char * s, int k){
+    int len = strlen(s);
+
+    for (int i = 0; i < len; i += (2 * k)) {
+        //判断剩余字符是否少于 k
+        k = i + k > len ? len - i : k;
+
+        int left = i;
+        int right = i + k - 1;
+        while (left < right) {
+            char temp = s[left];
+            s[left++] = s[right];
+            s[right--] = temp;
+        }
+    }
+
+    return s;
+}
+```
 
 Java：
+
 ```Java
 //解法一
 class Solution {