C Language and Pointer learning essays

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--variables are not necessarily stored in memory in the order they are declared

The-->& operator gets the address of the variable (pointer to the variable)
* operator can get the variable of address

int j=ten;     
int *p=&J;  Pointer p points to Jint k=*j;   

--declaration

int *p;  
int* p; Equivalent
int* P,p1; Cannot declare two pointer variable, second variable is int type

- -on the pointer plus n, the pointer forward "the current pointer to the data type length xn"
-- array subscript starting from 0

int array[];     
array[0]-array[9]  //10 elements

-- arrays and pointers

int array[];    
Int
   
p=array[0
p=array;//pointer p to the array start element address   

* (P+i)      
P[i]   
   /* array name [array element]      
Array start element address, can be understood as pointer */   
array[2];  
* (array+2); Both are equivalent

C Language and Pointer learning essays