C++

感觉多少有点复杂 Def A dangling pointer is a pointer that points to a location whose memory is deallocated. dynamic objects are managed by heap, and stack vice versa. Temporary objects are managed by stack. And rvalue reference is an alias of a temporary object/value. const int* is different from int* const. int* const相当于我们让一个const变量成为指针，比如int* const ptr = & x，那么实际上ptr作为一个const变量是不可变的，但是他指向的x的值是可变的，即* x = 5编译是可以通过的。相较之下，const int* ptr = & x则是ptr是changeable，x是unchangeable。 我告诉你一个小的技巧，就是c++k ...