内存由两部分构成 Memory，和数据结构中的 Heap Data Structure, Stack Data Structure 区分
C/C++
Malloc and Calloc
| Malloc | Calloc |
|---|---|
| Wont initialize value | Will initialize value (to 0) |
| Faster | Slower |
Malloc vs New
| Malloc | New |
|---|---|
| On heap | On heap |
| Dont call constructor | Call Constructor |
Free vs Delete
| Free | Delete |
|---|---|
| frees memory dont call destructor | Call destructor |