Compilare: main.cpp: In function 'void check(int)': main.cpp:43:8: warning: operation on 'nxt' may be undefined [-Wsequence-point] nxt=(poz==n-1)?nxt=v[0]:nxt=v[poz+1]; main.cpp:45:8: warning: operation on 'prv' may be undefined [-Wsequence-point] prv=(!poz)?prv=v.back():prv=v[poz-1];