c语言中关于二维数组的指针访问

#include"stdio.h"

#include"stdlib.h"

#include"string.h"

int main()

{

int arr[3][4] = {0};

int i = 0;

int j = 0;

int* p = &arr[0][0];

for (i = 0; i < sizeof(arr)/sizeof(arr[0][0]); i++)

{*(p + i) = i + 1;}

for (i = 0; i < 3; i++){

for (j = 0; j < 4; j++)

{printf(" %d",arr[i][j]);}}

system("pause");

return 0;

}