program Loops;
var
i, j, sum, product: integer;
counter: integer;
begin
sum := 0;
product := 1;
counter := 0;
i := 1;
while i <= 5 do
begin
sum := sum + i;
i := i + 1;
end;
i := 1;
while i <= 3 do
begin
j := 1;
while j <= 3 do
begin
product := product * i * j;
j := j + 1;
end;
i := i + 1;
end;
counter := 0;
while (counter < 10) and (sum < 50) do
begin
if counter mod 2 = 0 then
begin
sum := sum + counter;
end
else
begin
sum := sum - 1;
end;
counter := counter + 1;
end;
i := 0;
repeat
i := i + 1;
sum := sum + i;
until i >= 5;
end.