Compilare: user.cpp: In function 'void cauta(long int, long int, long int, long int&)': user.cpp:52: warning: comparison between signed and unsigned integer expressions user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void moveDown(long int)': user.cpp:63: warning: comparison between signed and unsigned integer expressions user.cpp:67: warning: comparison between signed and unsigned integer expressions user.cpp:71: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void stergere(long int)': user.cpp:90: warning: comparison between signed and unsigned integer expressions