If the user inputs this:

$5$

Grim visaged war has smooth'd his wrinkled front

And now, instead of mounting barded steeds

To fright the souls of fearful adversaries

He caper:s nimbly in a lady's chamber

To the lascivious pleasing of a lute

The program should print:

Grim visaged war has smooth'd his wrinkled front $+$

And now, instead of mounting barded steeds $+$

To fright the souls of fearful adversaries $.++$

He capers nimbly in a lady's chamber

To the lascivious pleasing of a lute.