For example:?
int I = 10; //Define an integer variable?
Int * p = & //Define a pointer to this variable?
int * * p 1 = & amp; p; //Define a secondary pointer to the p pointer?
So the value of 10 is:?
printf("i=[%d]\n ",* p); ?
printf(" I =[% d]\ n " ,* * p 1);
Extended data:
Pointer-array relation
Pointer array: an array of pointers, all elements of which are pointers, pointing to a memory address. char * p[ 10]; //p is an array of pointers.
Array pointer: The array name itself is a pointer to the first address of the array. Please note that this is a constant.
Example:
Char (*p)[ 10]//p is an array pointer.
Function pointer: a pointer to the function entry address itself, through which the pointed function can be called, and a callback function can be realized by using the function pointer.
Baidu encyclopedia-pointer