[perl] sub commentFilter { my $fileName = shift ;#参数是文件中的字符串 my $mul_begin = 0 ; open my $fd," < $fileName" or die "error"; while( <$fd> ) { if( m#\s/\*# )#if begin with: /* { $mul_begin = 1 ; } if($mul_begin) { if( m#\s\*/# ) #if end width */ { $mul_begin = 0 ; } } else { if( !m=^\s*(//|#)= ) # if begin with // or # { print $_ ; } } } } [/perl]