int arr[2][3] = { {1,2,3}, {4,5,6} }; for(int i=0 ; i<sizeof(arr) / sizeof(arr[0]) ; i++){ for(int j=0 ; j<sizeof(arr[i])/sizeof(arr[i][0]) ; j++){ cout<<"2D array have: "<< arr[i][j]<<endl; } }