Compilare: user.cpp: In function ‘void df1(int)’: user.cpp:17:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<g[x].size();i++) ^ user.cpp: In function ‘void df2(int)’: user.cpp:28:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<gr[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:51:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<Component.size();j++) Components[cp].push_back(Component[j]); ^ user.cpp:57:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<Components[i].size();j++) cout<<Components[i][j]<<" "; ^