В PascalABC.Net На 6 строке пишет " Встречено 'a1', а ожидалось ';' "
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program z1;
var
a,a1,a2,a3,a4,d1,d2: integer;
begin
Read (a)
a1:=d1_div_10;
writeln (a1)
a2:=a_mod_10;
writeln (a2)
a3:=a_mod_10;
writeln (a3)
a4:=a_mod_10;
writeln (a4)
d1:=a_div_10;
d2:=a_div_10
end.