uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('nhap xau:'); readln(st);
{------------------------------------cau-a--------------------------}
d:=length(st);
for i:=1 to d do
if st[i]=' 'then delete(st,i,1);
writeln('xau sau khi xoa toan bo dau trang la: ',st);
readln;
end.