$ANS=1234 ;
$count = $ANS =~ tr/1234// ;
print "$count\n";
請問tr後面有辦法帶入自己想要的變數嗎？
google了好久
$ANS=1234 ;
print "Please enter your number.\n";
chomp ($num=<STDIN>);
$count = $ANS =~ tr/// ;
print "$count\n";
tr後面該怎麼改才有辦法讓＄num帶入