Compilare: user.cpp: In function ‘void add_cuv(int)’: user.cpp:50:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] cur = arb[cur].next[v[i]]; ^ user.cpp:64:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] arb[cur].next[v[i]] = adr; ^ user.cpp: In function ‘void del_cuv(int)’: user.cpp:76:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] cur = arb[cur].next[v[i]]; ^ user.cpp: In function ‘int num_cuv(int, int)’: user.cpp:102:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] cur = arb[cur].next[v[i]]; ^