diff --git a/problems/0704.二分查找.md b/problems/0704.二分查找.md
index 472459de..21324db7 100644
--- a/problems/0704.二分查找.md
+++ b/problems/0704.二分查找.md
@@ -516,7 +516,7 @@ impl Solution {
 
 **C:**
 ```c
-## (版本一) 左闭右闭区间 [left, right]
+// (版本一) 左闭右闭区间 [left, right]
 int search(int* nums, int numsSize, int target){
     int left = 0;
     int right = numsSize-1;
@@ -543,7 +543,7 @@ int search(int* nums, int numsSize, int target){
 }
 ```
 ```C
-##(版本二) 左闭右开区间 [left, right)
+// (版本二) 左闭右开区间 [left, right)
 int search(int* nums, int numsSize, int target){
     int length = numsSize;
     int left = 0;