Compilare: user.cpp:142:2: warning: no newline at end of file user.cpp: In function 'bool BF()': user.cpp:64: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void flow()': user.cpp:80: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void reconst()': user.cpp:102: warning: comparison between signed and unsigned integer expressions