Compilare: user.cpp: In function ‘int BFS()’: user.cpp:40: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void BF1()’: user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void BF2()’: user.cpp:98: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void Scriere()’: user.cpp:112: warning: comparison between signed and unsigned integer expressions user.cpp:115: warning: comparison between signed and unsigned integer expressions user.cpp:123: warning: comparison between signed and unsigned integer expressions