添加 背包理论基础01-2.mc C语言版本

problems/背包理论基础01背包-2.md

@@ -315,6 +315,39 @@ function test () {
 test();
 ```
 
+### C
+```c
+#include <stdio.h>
+#include <string.h>
+
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#define ARR_SIZE(arr) ((sizeof((arr))) / sizeof((arr)[0]))
+#define BAG_WEIGHT 4
+
+void test_back_pack(int* weights, int weightSize, int* values, int valueSize, int bagWeight) {
+    int dp[bagWeight + 1];
+    memset(dp, 0, sizeof(int) * (bagWeight + 1));
+
+    int i, j;
+    // 先遍历物品
+    for(i = 0; i < weightSize; ++i) {
+        // 后遍历重量。从后向前遍历
+        for(j = bagWeight; j >= weights[i]; --j) {
+            dp[j] = MAX(dp[j], dp[j - weights[i]] + values[i]);
+        }
+    }
+
+    // 打印最优结果
+    printf("%d\n", dp[bagWeight]);
+}
+
+int main(int argc, char** argv) {
+    int weights[] = {1, 3, 4};
+    int values[] = {15, 20, 30};
+    test_back_pack(weights, ARR_SIZE(weights), values, ARR_SIZE(values), BAG_WEIGHT);
+    return 0;
+}
+```
 
 
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