Cultivate two kinds of ability
1; interface packaging and design (functional abstraction and encapsulation)
interface api use ability
interface api search ability (quick start)
interface api realization ability
2; establish correct program operation memory layout diagram (impression Figure)
The four-zone memory model
The function call model
How to establish a correct program operation memory layout
Memory four-zone model & function call model
Function elements
Deep understanding of data types and variable "memory" attributes
First-level pointer memory layout diagram (int , char )
Second-level pointer memory layout Figure (int ** char **)
Between functions
The main calling function allocates memory or the called function allocates memory
How does the main calling function use the memory allocated by the called function (technical key point: pointers are used as function parameters)
Layered application of c
Key to learning
