Compilare: user.cpp: In function ‘int main()’: user.cpp:29:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] q[i].l=q[v].l+dx[dir[ch]]; ^ user.cpp:30:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] q[i].c=q[v].c+dy[dir[ch]]; ^ user.cpp:91:8: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] a[c1]=1; ^