对上述给定的哈夫曼树且定义哈夫曼树中的结点的结构体都为的元素都为整型类型，试输入一串二进制编码，输出它的哈夫曼树中的节点对应的权值。用c语言写出并写出详细代码

假设给定的哈夫曼树结点的结构体定义如下：

typedef struct HuffmanNode {
    int weight; // 权值
    int parent; // 父节点下标
    int left; // 左子节点下标
    int right; // 右子节点下标
} HuffmanNode, *HuffmanTree;

则可以通过以下代码实现输入二进制编码并输出对应的权值：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct HuffmanNode {
    int weight;
    int parent;
    int left;
    int right;
} HuffmanNode, *HuffmanTree;

// 根据给定的权值数组和权值个数创建哈夫曼树
void createHuffmanTree(HuffmanTree *tree, int *weights, int n) {
    if (n <= 0) {
        return;
    }
    *tree = (HuffmanNode*)malloc(sizeof(HuffmanNode) * (2 * n - 1));
    for (int i = 0; i < n; i++) {
        (*tree + i)->weight = *(weights + i);
        (*tree + i)->parent = -1;
        (*tree + i)->left = -1;
        (*tree + i)->right = -1;
    }
    for (int i = n; i < 2 * n - 1; i++) {
        (*tree + i)->weight = 0;
        (*tree + i)->parent = -1;
        (*tree + i)->left = -1;
        (*tree + i)->right = -1;
    }
    for (int i = n; i < 2 * n - 1; i++) {
        int min1 = -1, min2 = -2;
        for (int j = 0; j < i; j++) {
            if ((*tree + j)->parent == -1) {
                if (min1 == -1) {
                    min1 = j;
                } else if ((*tree + j)->weight < (*tree + min1)->weight) {
                    min2 = min1;
                    min1 = j;
                } else if (min2 == -1 || (*tree + j)->weight < (*tree + min2)->weight) {
                    min2 = j;
                }
            }
        }
        (*tree + i)->weight = (*tree + min1)->weight + (*tree + min2)->weight;
        (*tree + i)->left = min1;
        (*tree + i)->right = min2;
        (*tree + min1)->parent = i;
        (*tree + min2)->parent = i;
    }
}

// 根据给定的哈夫曼编码和码字长度获取对应的权值
int getWeightByHuffmanCode(HuffmanTree tree, char *code, int len) {
    int nodeIndex = 2 * len - 2;
    for (int i = 0; i < len; i++) {
        if (*(code + i) == '0') {
            nodeIndex = (tree + nodeIndex)->left;
        } else if (*(code + i) == '1') {
            nodeIndex = (tree + nodeIndex)->right;
        }
    }
    return (tree + nodeIndex)->weight;
}

int main() {
    HuffmanTree tree = NULL;
    int weights[] = {7, 5, 2, 4};
    int n = sizeof(weights) / sizeof(weights[0]);
    createHuffmanTree(&tree, weights, n);
    char code[] = "1101";
    int weight = getWeightByHuffmanCode(tree, code, strlen(code));
    printf("The weight is: %d\n", weight);
    free(tree);
    return 0;
}

其中，`createHuffmanTree`函数用于根据给定的权值数组和权值个数创建哈夫曼树；`getWeightByHuffmanCode`函数用于根据给定的哈夫曼编码和码字长度获取对应的权值。在`main`函数中，首先调用`createHuffmanTree`函数创建哈夫曼树，然后使用`getWeightByHuffmanCode`函数获取二进制编码`1101`对应的权值，并输出结果。