Update 0188.买卖股票的最佳时机IV.md

0188.买卖股票的最佳时机IV新增C语言实现

problems/0188.买卖股票的最佳时机IV.md

@@ -474,6 +474,34 @@ function maxProfit(k: number, prices: number[]): number {
 };
 ```
 
+### C:
+
+```c
+#define max(a, b) ((a) > (b) ? (a) : (b))
+
+int maxProfit(int k, int* prices, int pricesSize) {
+    if(pricesSize == 0){
+        return 0;
+    }
+    
+    int dp[pricesSize][2 * k + 1];
+    memset(dp, 0, sizeof(int) * pricesSize * (2 * k + 1));
+    for (int j = 1; j < 2 * k; j += 2) {
+        dp[0][j] = -prices[0];
+    }
+
+    for (int i = 1;i < pricesSize; i++) {//枚举股票
+        for (int j = 0; j < 2 * k - 1; j += 2) { //更新每一次买入卖出
+            dp[i][j + 1] = max(dp[i - 1][j + 1], dp[i - 1][j] - prices[i]);
+            dp[i][j + 2] = max(dp[i - 1][j + 2], dp[i - 1][j + 1] + prices[i]);
+        }
+    }
+    return dp[pricesSize - 1][2 * k];
+}
+```
+
+
+
 ### Rust：
 
 ```rust
@@ -529,3 +557,4 @@ impl Solution {
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>
 </a>
+