帮我写一下这个建立线性链表并完成取值、查找、插入、和删除操作要求在main（）函数中应用的代码

创建一个简单的单向线性链表，并在`main()`函数中演示取值、查找、插入和删除操作，我们可以使用C++语言来实现。首先，我们需要定义链表节点结构体和一些基本操作的类成员函数。

#include <iostream>

// 定义链表节点结构体
struct Node {
    int data;
    Node* next;
};

class LinkedList {
private:
    Node* head;

public:
    // 构造函数
    LinkedList() : head(nullptr) {}

    // 插入节点
    void insert(int value) {
        Node* newNode = new Node();
        newNode->data = value;
        newNode->next = nullptr;

        if (head == nullptr) {
            head = newNode;
        } else {
            Node* current = head;
            while (current->next != nullptr) {
                current = current->next;
            }
            current->next = newNode;
        }
    }

    // 取值
    int get(int index) const {
        if (index < 0 || index >= size()) {
            throw std::out_of_range("Index out of range");
        }
        Node* current = head;
        for (int i = 0; i < index; ++i) {
            current = current->next;
        }
        return current->data;
    }

    // 查找
    bool find(int value) const {
        Node* current = head;
        while (current != nullptr) {
            if (current->data == value) {
                return true;
            }
            current = current->next;
        }
        return false;
    }

    // 删除
    void remove(int value) {
        if (head == nullptr) {
            return;
        }

        if (head->data == value) {
            Node* temp = head;
            head = head->next;
            delete temp;
            return;
        }

        Node* current = head;
        while (current->next != nullptr && current->next->data != value) {
            current = current->next;
        }

        if (current->next != nullptr) {
            Node* toRemove = current->next;
            current->next = current->next->next;
            delete toRemove;
        }
    }

    // 返回链表长度
    int size() const {
        int count = 0;
        Node* current = head;
        while (current != nullptr) {
            ++count;
            current = current->next;
        }
        return count;
    }

    // 主函数展示操作
    void demonstrateMain() {
        try {
            insert(5);
            insert(10);
            insert(15);

            std::cout << "Values: ";
            Node* node = head;
            while (node != nullptr) {
                std::cout << node->data << " -> ";
                node = node->next;
            }
            std::cout << "nullptr\n";

            std::cout << "Find 10: " << (find(10) ? "Found" : "Not Found") << "\n";
            std::cout << "Get index 1: " << get(1) << "\n";

            remove(10);
            std::cout << "After removing 10:\n";
            node = head;
            while (node != nullptr) {
                std::cout << node->data << " -> ";
                node = node->next;
            }
            std::cout << "nullptr\n";
        } catch (const std::exception& e) {
            std::cerr << "Error: " << e.what() << '\n';
        }
    }
};

int main() {
    LinkedList list;
    list.demonstrateMain();
    return 0;
}

在这个示例中，我们在`LinkedList`类中实现了插入、取值、查找和删除功能。在`main()`函数中，我们创建了一个链表实例并展示了如何使用这些方法。注意这只是一个基础的实现，实际使用时可能需要考虑异常处理和其他细节。