Compilare: user.cpp: In function ‘bool lexico(int, int)’: user.cpp:10:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[a].size();i++){ ^ user.cpp: In function ‘bool incl(int, int)’: user.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[b].size();i++){ ^ user.cpp:22:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==v[a].size())return 1; ^ user.cpp: In function ‘void cauta(int)’: user.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size()-1;i++){ ^ user.cpp:27:10: warning: unused variable ‘siz’ [-Wunused-variable] int siz = v.size(); ^ user.cpp: In function ‘void citire()’: user.cpp:52:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x.size()==ma){ ^ user.cpp:57:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x.size()>ma){ ^ user.cpp: In function ‘int main()’: user.cpp:74:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++)if(a[i]==0)g<<v[i]<<"\n"; ^