Use for loops to construct a program that displays a pyramid of $x$ s on the screen. The pyramid should look like this

$x$

$xxx$

$xxxxx$

$xxxxxxx$

$xxxxxxxxx$

except that it should be $20$ lines high, instead of the $5$ lines shown here. One way to do this is to nest two inner loops, one to print spaces and one to print $xs,$ inside an outer loop that steps down the screen from line to line.