function CalcGlasLatBukv(Stroka: string): integer;
var i,count:integer;
begin
count:=0;
for i:=1 to length(Stroka) do begin
case Stroka[i] of
'a','e','i','o','u','y','A','E','I','O','U','Y': count:=count+1;
end;
end;
CalcGlasLatBukv:=count;
end;
begin
write(CalcGlasLatBukv('Hello'));
end.