删除多余代码，添加值得注意的注释

简化main.cpp代码

CosmeticManager.cpp

@@ -2,6 +2,7 @@
 #include <fstream>
 #include <iostream>
 #include "Cosmetic.h"
+#include "windows.h"
 CosmeticManager::CosmeticManager()
         : cosmetics(new Cosmetic*[10]), count(0), capacity(10) {}
 
@@ -25,12 +26,19 @@ void CosmeticManager::resizeArray() {
     capacity = newCapacity;
 }
 
-void CosmeticManager::addCosmetic(const Cosmetic& cosmetic) {
+bool CosmeticManager::addCosmetic(const Cosmetic& cosmetic) {
+    // 先检查品牌名是否已存在
+    if (findCosmetic(cosmetic.getName()) != NULL) {
+        std::cout<<"错误：品牌名已存在"<<std::endl;
+        return false;  // 品牌名已存在，添加失败
+    }
+
     if (count >= capacity) {
         resizeArray();
     }
     cosmetics[count++] = new Cosmetic(cosmetic);
     saveToFile();
+    return true;  // 添加成功
 }
 
 bool CosmeticManager::deleteCosmetic(const std::string& name) {
@@ -99,9 +107,13 @@ void CosmeticManager::displayAll() const {
     for (int i = 0; i < count; ++i) {
         std::cout << "品牌: " << cosmetics[i]->getName()
                   << " | 价格: " << cosmetics[i]->getPrice()
-                  << " | 类型: " << (cosmetics[i]->getType() ? "国产" : "进口")
+                  << " | 类型: " << (cosmetics[i]->getType() ? "国产" : "进口")// 注意，这里还为开放其他类型，若需2种以上要新构建
                   << " | 过期日期: " << cosmetics[i]->getExpirationDate()  // 新增
                   << std::endl;
+        launchWindow("化妆品信息", "品牌: " + cosmetics[i]->getName()
+                  + " | 价格: " + std::to_string(cosmetics[i]->getPrice())
+                  + " | 类型: " + (cosmetics[i]->getType() ? "国产" : "进口")// 注意，这里还为开放其他类型，若需2种以上要新构建
+                  + " | 过期日期: " + cosmetics[i]->getExpirationDate());
     }
 }
 // 查找临期化妆品，小于60天
@@ -116,6 +128,12 @@ void CosmeticManager::displayExpiringCosmetics(int days=60) const {
         }
     }
 }
+
+// 窗口显示
+void CosmeticManager::launchWindow(std::string title, std::string info) const {
+    MessageBoxA(NULL, info.c_str(), title.c_str(), MB_OK);
+}
+
 // 基于YYYY-MM-DD格式的日期合法性检查
 bool CosmeticManager::isValidDate(const std::string& date) {
     if (date.length() != 10 || date[4] != '-' || date[7] != '-') {
@@ -145,4 +163,3 @@ bool CosmeticManager::isValidDate(const std::string& date) {
 
     return day <= maxDay;
 }
-

CosmeticManager.h

@@ -10,7 +10,7 @@ public:
     CosmeticManager();
     ~CosmeticManager();
 
-    void addCosmetic(const Cosmetic& cosmetic);
+    bool addCosmetic(const Cosmetic& cosmetic);
     bool deleteCosmetic(const std::string& name);
     Cosmetic* findCosmetic(const std::string& name);
     bool modifyCosmetic(const std::string &name, double newPrice, bool newType, std::string string);
@@ -19,6 +19,8 @@ public:
     void displayAll() const;
     void displayExpiringCosmetics(int i) const;  // 查找临期化妆品方法
     bool isValidDate(const std::string &date);
+    //窗口显示
+    void launchWindow(std::string title,std::string info) const;
 
 private:
     Cosmetic** cosmetics;  // 动态指针数组

main.cpp

@@ -1,7 +1,7 @@
 #include "CosmeticManager.h"
 #include <iostream>
-#include <ctime>
 #include <string>
+#include <limits>
 
 void displayMenu() {
     std::cout << "\n===== 化妆品管理系统 =====" << std::endl;
@@ -17,49 +17,89 @@ void displayMenu() {
     std::cout << "请选择操作: " << std::endl;
 }
 
+// 获取并验证日期输入
+bool getAndValidateDate(CosmeticManager& manager, std::string& expirationDate) {
+    std::cout << "输入过期日期 (YYYY-MM-DD): ";
+    std::cin >> expirationDate;
+    if (!manager.isValidDate(expirationDate)) {
+        std::cout << "日期格式有误！格式YYYY-MM-DD 例2000-01-01" << std::endl;
+        manager.launchWindow("日期格式有误","格式YYYY-MM-DD 例2000-01-01");
+        return false;
+    }
+    return true;
+}
+
+// 获取并验证类型输入
+bool getAndValidateType(int& type, CosmeticManager& manager) {
+    std::cout << "输入类型 (1-国产, 0-进口): ";
+    std::cin >> type;
+    if (type != 1 && type != 0) {
+        std::cout << "类型输入错误！请输入1-国产, 0-进口" << std::endl;
+        manager.launchWindow("类型输入错误","请输入1-国产, 0-进口");
+        return false;
+    }
+    return true;
+}
+
 int main() {
     CosmeticManager manager;
     manager.loadFromFile();  // 启动时加载数据
 
-    int choice;
-    std::string name;
-    double price;
-    bool type;
-    std::string expirationDate;// 过期日期
-
     while (true) {
+        int choice;
+        std::string name;
+        double price;
+        int type;
+        std::string expirationDate;// 过期日期
+        std::string msgboxTitle, msgboxContent;// 消息框标题和内容
         displayMenu();
         std::cin >> choice;
-
         switch (choice) {
             case 1: {
                 std::cout << "输入品牌名称: ";
                 std::cin >> name;
                 std::cout << "输入价格: ";
                 std::cin >> price;
-                std::cout << "输入类型 (1-国产, 0-进口): ";
-                std::cin >> type;
-                if (type!=1 && type!=0) {
-                    std::cout << "类型输入错误！请输入1-国产, 0-进口" << std::endl;
+                if (!getAndValidateType(type, manager)) {
                     break;
                 }
-                std::cout << "输入过期日期 (YYYY-MM-DD): ";
-                std::cin >> expirationDate;
-                if (!manager.isValidDate(expirationDate)) {
-                    std::cout << "日期格式有误！格式YYYY-MM-DD 例2000-01-01" << std::endl;
+                if (!getAndValidateDate(manager, expirationDate)) {
                     break;
                 }
-                manager.addCosmetic(Cosmetic(name, price, type, expirationDate));
-                std::cout << "添加成功!" << std::endl;
+                // 检查品牌名是否已存在
+                if (manager.findCosmetic(name) != nullptr) {
+                    msgboxTitle="添加失败";
+                    msgboxContent="品牌名已存在";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
+                    break;
+                }
+                if (manager.addCosmetic(Cosmetic(name, price, type, expirationDate))) {
+                    msgboxTitle="添加成功";
+                    msgboxContent="品牌添加成功";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
+                } else {
+                    msgboxTitle="添加失败";
+                    msgboxContent="品牌已存在或其他错误";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
+                }
                 break;
             }
             case 2: {
                 std::cout << "输入要删除的品牌名称: ";
                 std::cin >> name;
                 if (manager.deleteCosmetic(name)) {
-                    std::cout << "删除成功!" << std::endl;
+                    msgboxTitle="删除成功";
+                    msgboxContent="品牌删除成功";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
                 } else {
-                    std::cout << "未找到该品牌!" << std::endl;
+                    msgboxTitle="删除失败";
+                    msgboxContent="未找到该品牌";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
                 }
                 break;
             }
@@ -70,12 +110,24 @@ int main() {
                 if (cosmetic) {
                     std::cout << "品牌: " << cosmetic->getName() << "\n"
                               << "价格: " << cosmetic->getPrice() << "\n"
-                              << "类型: " << (cosmetic->getType() ? "国产" : "进口") << "\n"
+                              << "类型: " << (cosmetic->getType() ? "国产" : "进口") << "\n"// 注意，这里还为开放其他类型，若需2种以上要新构
                               << "过期日期: " << cosmetic->getExpirationDate() << "\n"
                               << std::endl;
+                    msgboxTitle="查询成功";
+                    msgboxContent=cosmetic->getName() + "\n"
+                              + "价格: " + std::to_string(cosmetic->getPrice()) + "\n"
+                              + "类型: " + (cosmetic->getType() ? "国产" : "进口") + "\n"// 注意，这里还为开放其他类型，若需2种以上要新构建
+                              + "过期日期: " + cosmetic->getExpirationDate();
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
                 } else {
-                    std::cout << "未找到该品牌!" << std::endl;
+                    msgboxTitle="查询失败";
+                    msgboxContent="未找到该品牌";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
                 }
+                // 清除输入缓冲区
+                std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
                 break;
             }
             case 4: {
@@ -83,22 +135,22 @@ int main() {
                 std::cin >> name;
                 std::cout << "输入新价格: ";
                 std::cin >> price;
-                std::cout << "输入新类型 (1-国产, 0-进口): ";
-                std::cin >> type;
-                if (type!=1 && type!=0) {
-                    std::cout << "类型输入错误！请输入1-国产, 0-进口" << std::endl;
+                if (!getAndValidateType(type, manager)) {
                     break;
                 }
-                std::cout << "输入新过期日期 (YYYY-MM-DD): ";
-                std::cin >> expirationDate;
-                if (!manager.isValidDate(expirationDate)) {
-                    std::cout << "日期格式有误！格式YYYY-MM-DD 例2000-01-01" << std::endl;
+                if (!getAndValidateDate(manager, expirationDate)) {
                     break;
                 }
                 if (manager.modifyCosmetic(name, price, type, expirationDate)) {
-                    std::cout << "修改成功!" << std::endl;
+                    msgboxTitle="修改成功";
+                    msgboxContent="品牌修改成功";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
                 } else {
-                    std::cout << "未找到该品牌!" << std::endl;
+                    msgboxTitle="修改失败";
+                    msgboxContent="未找到该品牌";
+                    std::cout << msgboxContent << std::endl;
+                    manager.launchWindow(msgboxTitle,msgboxContent);
                 }
                 break;
             }
@@ -114,10 +166,16 @@ int main() {
             }
             case 0:
                 manager.saveToFile();
-                std::cout << "数据已保存，再见!" << std::endl;
+                msgboxTitle="数据已保存";
+                msgboxContent="数据已保存，再见!";
+                std::cout << msgboxContent << std::endl;
+                manager.launchWindow(msgboxTitle,msgboxContent);
                 return 0;
             default:
-                std::cout << "无效选项，请重新选择!" << std::endl;
+                msgboxTitle="无效选项";
+                msgboxContent="请重新选择!";
+                std::cout << msgboxContent << std::endl;
+                manager.launchWindow(msgboxTitle,msgboxContent);
         }
     }
     // ???