Compilare: user.cpp: In function 'void dfsCV(Vertex**, int)': user.cpp:540: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dijkstra(Vertex**, int)': user.cpp:600: warning: comparison between signed and unsigned integer expressions user.cpp:620: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:687: warning: deprecated conversion from string constant to 'char*'