关于operator new
假设我要分配50个int对象，那我可以这样写void* buffer operator new(50*sizeof(int));
也可以这样写
void* buffer operator new[](50*sizeof(int));
这两种方法除了delete时应使用相应的形式外，到底有什么其他的不同的
目前看来无不同，但我帮你google了一下
Why are operator new and operator new[] different? One often wants to implement a simple new/delete for a particular class (for instance by keeping a freelist) while not worrying about cases where one must allocate different-sized chunks of memory. Defining operators new and delete for a class but not new[] and delete[] accomplishes exactly this.
http://www.scs.stanford.edu/~dm/home/papers/c++-new.html