用C++实现以下代码：假设你需要编写一个文件系统搜索程序，该程序可以在给定的文件系统中搜素包含指定关键字的路径。假设文件系统结构如下： root/ -folder1/ --file1.txt --fi

以下是使用C语言实现文件系统搜索程序的示例代码：

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

#define MAX_PATH_LENGTH 100

typedef struct Node {
char name[MAX_PATH_LENGTH];
struct Node* children;
struct Node* next;
} Node;

Node* createNode(char* name) {
Node* newNode = (Node*)malloc(sizeof(Node));
strcpy(newNode->name, name);
newNode->children = NULL;
newNode->next = NULL;
return newNode;
}

void insertChild(Node* parent, Node* child) {
if (parent->children == NULL) {
parent->children = child;
} else {
Node* current = parent->children;
while (current->next != NULL) {
current = current->next;
}
current->next = child;
}
}

void printPath(Node* node, int level) {
for (int i = 0; i < level; i++) {
printf("-");
}
printf("%s\n", node->name);

Node* current = node->children;
while (current != NULL) {
printPath(current, level + 1);
current = current->next;
}
}

void searchKeyword(Node* node, char* keyword) {
if (strstr(node->name, keyword) != NULL) {
printf("Found: %s\n", node->name);
}

Node* current = node->children;
while (current != NULL) {
searchKeyword(current, keyword);
current = current->next;
}
}

int main() {
Node* root = createNode("root");

Node* folder1 = createNode("folder1");
Node* file1 = createNode("file1.txt");
Node* file2 = createNode("file2.txt");
insertChild(folder1, file1);
insertChild(folder1, file2);
insertChild(root, folder1);

Node* folder2 = createNode("folder2");
Node* file3 = createNode("file3.txt");
Node* file4 = createNode("file4.txt");
insertChild(folder2, file3);
insertChild(folder2, file4);
insertChild(root, folder2);

Node* folder3 = createNode("folder3");
Node* file5 = createNode("file5.txt");
insertChild(folder3, file5);
insertChild(root, folder3);

Node* folder4 = createNode("folder4");
Node* file6 = createNode("file6.txt");
insertChild(folder4, file6);
insertChild(root, folder4);

printf("File System Structure:\n");
printPath(root, 0);

char keyword[MAX_PATH_LENGTH];
printf("Enter keyword to search: ");
scanf("%s", keyword);

printf("Search Results:\n");
searchKeyword(root, keyword);

return 0;
}
```

这段代码首先定义了一个`Node`结构体，用于表示文件夹或文件节点。然后，通过`createNode`函数创建节点，并通过`insertChild`函数将子节点插入父节点中。`printPath`函数用于打印文件系统的层级结构，`searchKeyword`函数用于搜索包含指定关键字的路径。

在`main`函数中，我们创建了一个示例的文件系统结构，并打印出来。然后，用户可以输入关键字进行搜索，程序将输出包含关键字的路径。

请注意，这只是一个简单的示例代码，实际的文件系统搜索程序可能需要更复杂的逻辑和功能。