diff --git a/problems/0122.买卖股票的最佳时机II.md b/problems/0122.买卖股票的最佳时机II.md
index 29aa5b83..bd837eea 100644
--- a/problems/0122.买卖股票的最佳时机II.md
+++ b/problems/0122.买卖股票的最佳时机II.md
@@ -229,6 +229,21 @@ var maxProfit = function(prices) {
 };
 ```
 
+C:
+```c
+int maxProfit(int* prices, int pricesSize){
+    int result = 0;
+    int i;
+    //从第二个元素开始遍历数组，与之前的元素进行比较
+    for(i = 1; i < pricesSize; ++i) {
+        //若该元素比前面元素大，则说明有利润。代表买入
+        if(prices[i] > prices[i-1])
+            result+= prices[i]-prices[i-1];
+    }
+    return result;
+}
+```
+
 -----------------------
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