Compilare: user.cpp: In function ‘void Citire()’: user.cpp:26:9: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y; ^ user.cpp: In function ‘void BFS()’: user.cpp:61:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<L[k].size(); j++) ^ user.cpp:42:15: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int i,j,k,c; ^ user.cpp: In function ‘void Clear_everything()’: user.cpp:89:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^