Compilare: user.cpp: In function ‘void work()’: user.cpp:16:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] D[i]=0; ^ user.cpp:20:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] x=A[i]; ^ user.cpp:21:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1;j<=d;++j) if(a[x][j]) D[j]=1; ^ user.cpp:21:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1;j<=d;++j) if(a[x][j]) D[j]=1; ^ user.cpp:21:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1;j<=d;++j) if(a[x][j]) D[j]=1; ^ user.cpp:24:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(i=1;i<=d;++i) k+=D[i]; ^ user.cpp:27:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(i=1;i<=K;++i) cout<<A[i]<<" "; ^ user.cpp: In function ‘int main()’: user.cpp:60:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1; j<=x; ++j) f>>xx,a[i][xx]=1;; ^ user.cpp:60:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=1; j<=x; ++j) f>>xx,a[i][xx]=1;; ^