Compilare: user.cpp: In function 'void write()': user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void DFS(int)': user.cpp:67: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int DFST(int)': user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void intoarce()': user.cpp:92: warning: comparison between signed and unsigned integer expressions user.cpp:110: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void scrie()': user.cpp:124: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void intoarce()': user.cpp:87: warning: 'poz' may be used uninitialized in this function