Write a recursive void function that has one parameter which is a positive integer. When called, the function is to write its arguments to the screen backward: If the argument is 1234, the output should be. 4321.

What will be an ideal response?

```
void backward(int n)
{
if(n<10)
cout < n;
else
{
cout << n%10; // write last digit
backward(n/10); // write rest of digits (backwards)
}
}
```