C language two-dimensional array is called with one-dimensional array

I knew that the two-dimensional array in C language is stored in the memory as a one-dimensional array, but I have never tried to use a one-dimensional array to call a two-dimensional array.

The output of the following code is:

17 24 17
8 42 22
17 24 17 8 8 42 22

I thought the compilation would report an error, but no error was actually reported.

#include#include#includeint main(){int arr[2][3];srand(time(0));for(int i=0;i<2;i++)for(int j=0;j<3;j++)arr[i][j]=rand()%50+1;for(int i=0;i<2;i++){for(int j=0;j<3;j++)//cout<