Compilare: user.cpp: In member function ‘void Graf::afisare()’: user.cpp:66:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < this->adiacenta[i].size(); j++) ^ user.cpp: In member function ‘void Graf::DFS_conexe(int)’: user.cpp:77:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < this->adiacenta[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:108:17: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^