Compilare: user.cpp: In function ‘int FILL(int, int)’: user.cpp:44:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void BFS(int, int)’: user.cpp:129:17: warning: ‘pz4’ may be used uninitialized in this function [-Wmaybe-uninitialized] y2 = pz4; ^ user.cpp:128:17: warning: ‘pz3’ may be used uninitialized in this function [-Wmaybe-uninitialized] x2 = pz3; ^ user.cpp:127:17: warning: ‘pz2’ may be used uninitialized in this function [-Wmaybe-uninitialized] y1 = pz2; ^ user.cpp:126:17: warning: ‘pz1’ may be used uninitialized in this function [-Wmaybe-uninitialized] x1 = pz1; ^