PROGRAM main
  BEGIN
    VAR %% can be empty or completely missing
      x : INTEGER;
      y : FLOAT;
      z : FLOAT;
    ENDVAR
    y := 3.5;
    z := 0.0;
    WRITE(y);
    WRITESP();
    y := y + 5.5;
    y := (y * 5.0)/5.0;
    WRITE(y);
    WRITESP();
    y <-> z;
    WRITE(y);
    WRITESP();
    x := (5 + 3*(1+2));
    WRITE(z);
    WRITELN();
      
  END