Compilare: user.cpp: In function ‘int main()’: user.cpp:57:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (i=1; i<=l; ++i) poz[cuv[i]] = i; ^ user.cpp:67:110: warning: array subscript has type ‘char’ [-Wchar-subscripts] lmin = min(lmin, i),cmin = min(cmin, j),lmax = max(lmax, i),cmax = max(cmax, j),X[poz[a[i][j]]] = i,Y[poz[a[i][j]]] = j; ^ user.cpp:67:130: warning: array subscript has type ‘char’ [-Wchar-subscripts] lmin = min(lmin, i),cmin = min(cmin, j),lmax = max(lmax, i),cmax = max(cmax, j),X[poz[a[i][j]]] = i,Y[poz[a[i][j]]] = j; ^