C3

program cau3;
uses crt;
var i,n:integer;
    s:real;
    a:array[1..100] of real;

begin
 clrscr;s:=0;
 write('Nhap n= ');readln(n);
 for i:=1 to n do
  begin
   write('a[',i,']= ');readln(a[i]);
   s:=s+a[i];
  end;
  write('Tong cua day so da nhap la: ',s:5:2);
  readln;
end.