diff --git a/problems/0746.使用最小花费爬楼梯.md b/problems/0746.使用最小花费爬楼梯.md
index a146cc8b..91cd2c8b 100644
--- a/problems/0746.使用最小花费爬楼梯.md
+++ b/problems/0746.使用最小花费爬楼梯.md
@@ -266,5 +266,21 @@ var minCostClimbingStairs = function(cost) {
 };
 ```
 
+### C
+```c
+int minCostClimbingStairs(int* cost, int costSize){
+    //开辟dp数组，大小为costSize
+    int *dp = (int *)malloc(sizeof(int) * costSize);
+    //初始化dp[0] = cost[0], dp[1] = cost[1]
+    dp[0] = cost[0], dp[1] = cost[1];
+
+    int i;
+    for(i = 2; i < costSize; ++i) {
+        dp[i] = (dp[i-1] < dp[i-2] ? dp[i-1] : dp[i-2]) + cost[i];
+    }
+    //选出倒数2层楼梯中较小的
+    return dp[i-1] < dp[i-2] ? dp[i-1] : dp[i-2];
+}
+```
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 <div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>