stm32 heap and stack-EEWORLD

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First, let's understand the meaning of heap and stack ():

(1) Stack: Automatically allocated and released by the compiler, it stores function parameter values, local variable values, etc. Its operation is similar to the stack in the data structure.

(2) Heap: Generally allocated and released by the programmer. If the programmer does not release it, it may be reclaimed by the operating system when the program ends. The allocation method is similar to the linked list in the data structure.

(3) Global area (static area): Global variables and static variables are stored together. Initialized global variables and static variables are in one area, and uninitialized global variables and uninitialized static variables are in another adjacent area. They are automatically released by the system after the program ends.

(4) Text constant area: Constant character strings are stored here.

(5) Program code area: stores the binary code of the function body.

There are a lot of nouns to explain, but this is not the point. The point is to look at the examples!

int a=0; //global initialization area

char *p1; //global uninitialized area

main()

{

int b; //stack

char s[]="abc"; //stack

char *p3= "1234567"; //In the text constant area

static int c =0 ; //static initialization area

p1= (char *)malloc(10); //heap area

strcpy（p1,"123456"); //"123456" is placed in the constant area

}

Keywords：stm32 Reference address：stm32 heap and stack

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