Compilare: user.cpp: In function ‘bool umbrelizat(int, int, int, int)’: user.cpp:38:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<umbrele.size(); i++) ^ user.cpp: In function ‘void ocupy()’: user.cpp:93:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i< umbrele.size(); i++) ^ user.cpp:92:18: warning: unused variable ‘j’ [-Wunused-variable] register int j; ^