The school example of calculating the average score using the Pascal

coculateavarage.pas

{*******************************************************************}
{                                                                   }
{      Borland Turbo Pascal 1.5 for Windows                         }
{      Thursday, 9. December 2010                                   }
{      Copyright(c) by Edin Jašarević                               }
{      edinjasar14@gmail.com                                        }
{                                                                   }
{*******************************************************************}

Program CoculateAvarage (Input, OutPut);
Uses WinCrt;

Const NUMBER_SUBJECT=16;

Type mark=array[1..NUMBER_SUBJECT] Of Integer;

Var  rating:mark;
     i, sum:Integer;
     avarage:Real;

Begin
  For i:=1 To NUMBER_SUBJECT Do Begin
    Write ('Rating: ');
    Readln (rating[i]);
    sum:=0;
    i:=1;
    
    While i<=NUMBER_SUBJECT Do Begin
      sum:=sum+rating[i];
      i:=i+1;
    end
  end;
  
  avarage :=sum/NUMBER_SUBJECT;
  Writeln ('Avarage: ',avarage:6:2);
end.