Compilare: user.cpp: In function ‘void sorteaza()’: user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void det_inc(int)’: user.cpp:103: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void det_sf(int)’: user.cpp:111: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void rezolva(int)’: user.cpp:123: warning: comparison between signed and unsigned integer expressions user.cpp:120: warning: unused variable ‘j’ user.cpp: In function ‘void afisare()’: user.cpp:145: warning: unused variable ‘j’