learn c points in a weird way

points.c

#include <stdio.h>

int main(int argc, char *argv[]) {
	int data[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
	int *p1 = (int *)data;
	int **p2 = (int **)data;
	int *************pn = (int *************)data;

	printf("p1[3] = %d\n", p1[3]);
	printf("p2[3] = %d\n", p2[3]);
	printf("pn[3] = %d\n", pn[3]);
	return 0;
}

result_32.txt

p1[3] = 4
p2[3] = 4
pn[3] = 4

result_64.txt

p1[3] = 4
p2[3] = 7
pn[3] = 7

(assuming a pointer fits into an int on your machine):

pn = (int *************) &pn;

the program will not crash with pn = (int *************) &pn;. the result is here

p1[3] at 0028FE80 = 4
p2[3] at 0028FE80 = 4
pn[3] at 0028FEB0 = 4233936

you actually get the data pn[3] from stack where the variable pn defined with offset=3_sizeof(int *_***********), It's not from the array data you defined.

the result above is compiled with GCC4.8.1 32bit on Windows.