#!/usr/bin/perl $x=5; $y=0; $y=++$x; # Add 1 to $x first; then assign to $y print "Pre-increment:\n"; print "y is $y\n"; print "x is $x\n"; $x=5; $y=0; print "Post-increment:\n"; $y=$x++; # Assign value in $x to $y; then add 1 to $x print "y is $y\n"; print "x is $x\n";