Perl-Input and Output
Perl-Input and Output1.printf 格式化输出:
print "Please input the value of width:\n";
chmop( $width = <STDIN> );
print "Please input the content of string:\n";
chmop ( @string = <STDIN> );
print "1234567890" x (($width+9)/10,"12345";
foreach my $lines (@string){
printf "%${width}s\n", $lines;#标量内插,这里要用{}和s分开
}
输入:
Please input the wide:
30
Please input the string:
hewei
good-bye
d
D
12345678901234567890123456789012345
hewei
good-bye
d
D
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