用c语言输出树中从根结点到所有叶结点的路径

以下是用C语言输出树中从根节点到所有叶节点的路径的代码：

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

struct TreeNode {
    int val;
    struct TreeNode *left;
    struct TreeNode *right;
};

void printPaths(struct TreeNode* root, int path[], int pathLen) {
    if (root == NULL) {
        return;
    }
    path[pathLen] = root->val;
    pathLen++;
    if (root->left == NULL && root->right == NULL) {
        for (int i = 0; i < pathLen; i++) {
            printf("%d", path[i]);
            if (i != pathLen - 1) {
                printf("->");
            }
        }
        printf("\n");
    } else {
        printPaths(root->left, path, pathLen);
        printPaths(root->right, path, pathLen);
    }
}

int main() {
    struct TreeNode* root = (struct TreeNode*)malloc(sizeof(struct TreeNode));
    root->val = 1;
    root->left = (struct TreeNode*)malloc(sizeof(struct TreeNode));
    root->left->val = 2;
    root->left->left = NULL;
    root->left->right = NULL;
    root->right = (struct TreeNode*)malloc(sizeof(struct TreeNode));
    root->right->val = 3;
    root->right->left = (struct TreeNode*)malloc(sizeof(struct TreeNode));
    root->right->left->val = 4;
    root->right->left->left = NULL;
    root->right->left->right = NULL;
    root->right->right = (struct TreeNode*)malloc(sizeof(struct TreeNode));
    root->right->right->val = 5;
    root->right->right->left = NULL;
    root->right->right->right = NULL;
    int path[100];
    printPaths(root, path, 0);
    return 0;
}