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huihut 2018-04-04 01:16:06 +08:00
parent 5ff3ab91ad
commit d91abf8e8c
1 changed files with 1 additions and 1 deletions
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@ -180,7 +180,7 @@ int main()
Base *ptr = new Derived(); Base *ptr = new Derived();
ptr->who(); ptr->who();
// 因为Base有虚析构函数（virtual ~Base() {}），所以调用基类（Base）析构函数，也调用派生类（Derived）析构函数，防止内存泄漏。 // 因为Base有虚析构函数（virtual ~Base() {}），所以delete调用基类（Base）析构函数，也调用派生类（Derived）析构函数，防止内存泄漏。
delete ptr; delete ptr;
ptr = nullptr; ptr = nullptr;