C + + language extensions to C + +

1. Use of namespaces

See the following links: http://www.cnblogs.com/uniqueliu/archive/2011/07/10/2102238.html

Note: If you use the namespace STD, you must turn back the file's extension when you include the header file with the # include compilation preprocessing command.

Namespaces can be disjoint, divided into multiple segments, but they are still the same namespace. Namespaces cannot be defined inside a function declaration, function definition, or class definition.

2. Allocation and release of dynamic memory

The memory space that can be used when the program runs is called a heap.

C + + language extensions to C + +