Pascal. Функции. Задача 4

program functions_4;
uses crt;
var
n: integer;
function factorial(m: integer): integer;
var i, f: integer;
begin
f:=1;
for i:=1 to m do
f:=f*i;
factorial:=f;
end;
begin
clrscr;
write(‘N > ‘); read(n);
write(n, ‘! = ‘, factorial(n));
readkey;
end.