That is not entirely the case here though. See the following code and output.
my $f = 1;
print '$f = ', $f, ' and $f + $f++ = ', $f + $f++, "\n";
my $g = 1;
print '$g = ', $g;
print ' and $g + $g++ = ', $g + $g++, "\n";
$f = 2 and $f + $f++ = 3
$g = 1 and $g + $g++ = 3
This is not the expected behaviour in C and i'm only auto-increment/decrement a single time.
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