Compilare: user.cpp: In function ‘int main()’: user.cpp:21:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.size()>maxx) ^ user.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.size()==maxx) ^ user.cpp:57:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<=v[i].size()-1;k++) ^ user.cpp:59:70: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(v[i][k]!=v[j][poz] && poz<=v[j].size()-1) ^ user.cpp:63:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==v[j].size()) ^