Compilare: user.cpp: In function ‘int main()’: user.cpp:43:55: warning: iteration 6u invokes undefined behavior [-Waggressive-loop-optimizations] for (z=0; z<=64; z++) v[x][y][z]=0; ^ user.cpp:41:13: note: containing loop for (x=0; x<=64; x++) ^ user.cpp:43:55: warning: iteration 6u invokes undefined behavior [-Waggressive-loop-optimizations] for (z=0; z<=64; z++) v[x][y][z]=0; ^ user.cpp:42:17: note: containing loop for (y=0; y<=64; y++) ^ user.cpp:43:55: warning: iteration 6u invokes undefined behavior [-Waggressive-loop-optimizations] for (z=0; z<=64; z++) v[x][y][z]=0; ^ user.cpp:43:21: note: containing loop for (z=0; z<=64; z++) v[x][y][z]=0; ^