Compilare: user.cpp: In function ‘int cmp(int, int)’: user.cpp:31:11: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] { if(a&15<b&15) return 1; ^ user.cpp:32:10: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(a&15>b&15) return 0; ^ user.cpp: In function ‘int main()’: user.cpp:44:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(v[j]) ap[v[j++]]=1; ^ user.cpp:48:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ap[j]) ++nx, x[nx]=j, cx[nx]=nx+8; ^ user.cpp:49:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(i=1;i<=nx;++i) ap[x[i]]=cx[i]; ^ user.cpp:51:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ap[j]) ++ny, y[ny]=j, cy[ny]=ny; ^ user.cpp:52:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(i=1;i<=ny;++i) ap[y[i]]=cy[i]; ^ user.cpp:61:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[k]>'Z') w[i]=w[i]+ap[v[k]]*p[k], ++k; ^ user.cpp:64:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] w[i]=w[i]+ap[v[k]]*p[k], ++k; ^