Compilare: user.cpp: In function ‘void Lee()’: user.cpp:43:10: warning: value computed is not used [-Wunused-value] i==coada.front().first; ^ user.cpp:44:10: warning: value computed is not used [-Wunused-value] j==coada.front().second; ^ user.cpp:48:22: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] i_next=i + di[direct]; ^ user.cpp:49:22: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] j_next=j + dj[direct]; ^