Compilare: user.cpp: In function ‘void add(nod*, std::string, int)’: user.cpp:24:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()) node->valapar ++; ^ user.cpp:26:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()) return; ^ user.cpp: In function ‘void erase(nod*, std::string, int)’: user.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()) node->valapar--; ^ user.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()) return; ^ user.cpp: In function ‘int nrapar(nod*, std::string, int)’: user.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()) return node->valapar; ^ user.cpp: In function ‘int prefix(nod*, std::string, int)’: user.cpp:48:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == s.size()) return poz; ^