在JAVA 和 C# 中都有垃圾回收功能，程序员在分配一段内存后可以不再理会，而由垃圾回收自动回收，从而使程序员从复杂的内存管理中解脱出来。这是JAVA 和 C#的一大优点。而C++程序员在用 new 分配了一段内存后，还必须用 delete 释放，否则将造成资源泄漏。因此，一些C++ 书上经常告诫程序员：要养成好的习惯，new 与 delete 要成对出现，时刻记住将内存释放回系统。但是，事情只是这么简单吗？-In both JAVA and C#, garbage collection, in the allocation of a memory, the programmer can no longer ignore, and by recycling garbage collection automatically, so programmers from the complexity of memory management in earnest. JAVA and C# This is a big advantage. The C++ programmers with a new allocation of some memory, but also must delete the release, otherwise it will result in resource leaks. Therefore, some books on C++ programmers often warned: To develop good habits, new and delete to be in pairs, always remember that the memory is released back into the system. However, it is just that simple?