禁止添加重复的品牌名

CosmeticManager.cpp

@@ -25,12 +25,19 @@ 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()) != nullptr) {
+        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) {
@@ -146,3 +153,4 @@ 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);

main.cpp

@@ -50,7 +50,11 @@ int main() {
                     break;
                 }
                 manager.addCosmetic(Cosmetic(name, price, type, expirationDate));
+                if (manager.addCosmetic(Cosmetic(name, price, type, expirationDate))) {
                     std::cout << "添加成功!" << std::endl;
+                } else {
+                    std::cout << "添加失败!原因请检查日志。" << std::endl;
+                }
                 break;
             }
             case 2: {