Compilare: user.cpp: In function ‘bool DFS(int)’: user.cpp:19:14: warning: comparison of constant ‘2’ with boolean expression is always true [-Wbool-compare] if(viz[n]<2) ~~~~~~^~ user.cpp:26:22: warning: comparison of constant ‘2’ with boolean expression is always true [-Wbool-compare] if(viz[vecin]<2) ~~~~~~~~~~^~ user.cpp:30:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^