C Language Pointers Pointer to Pointer
Example
In C, a pointer can refer to another pointer.
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int A = 42;
int* pA = &A;
int** ppA = &pA;
int*** pppA = &ppA;
printf("%d", ***pppA); /* prints 42 */
return EXIT_SUCCESS;
}
But, reference-and-reference directly is not allowed.
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int A = 42;
int* pA = &A;
int** ppA = &&A; /* Compilation error here! */
int*** pppA = &&&A; /* Compilation error here! */
...
