The program is meant to find the maximum value in the array Dat and the index at which it occurs.

The correct syntax for the comparison statement is "if Dat[k] > m then" instead of "if Dat[k] >m then". The correct code should be:

Var k, m, t : integer;
Dat: array[1..10] of integer;
Begin
Dat[1] := 36; Dat[2] := 50;
Dat[3] := 23; Dat[4] :=41;
Dat[5] := 27; Dat[6] := 22;
Dat[7] := 59; Dat[8] := 12;
Dat[9] := 65; Dat[10] := 35;
m := 0;
for k := 1 to 10 do
if Dat[k] > m then
begin
m := Dat[k];
t := k
end;
writeln(t)
End.

This code will correctly output the index of the maximum value in the array Dat.