Flattening a 2D Array Through a Pointer

1#include <stdio.h>
2 
3int main() {
4    int m[2][3] = {{1, 2, 3}, {4, 5, 6}};
5    int *p = &m[0][0];
6    printf("%d %d\n", p[3], p[5]);
7    return 0;
8}