Compilare: user.cpp:141:2: warning: no newline at end of file user.cpp: In function 'int indice(const int&, const int&)': user.cpp:30: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'bool bfs()': user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void flux()': user.cpp:69: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int indice(const int&, const int&)': user.cpp:33: warning: control reaches end of non-void function