Eroare de compilare: user.cpp: In function ‘int lcp(std::string, std::string)’: user.cpp:13:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a.size() && i<b.size(); ++i) ^ user.cpp:13:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a.size() && i<b.size(); ++i) ^ user.cpp: In function ‘bool cmp(const int&, const int&)’: user.cpp:19:43: error: ‘strcmp’ was not declared in this scope return strcmp(cv[a].c_str(),cv[b].c_str())<0; ^ user.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type] } ^