Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
111 views
in Technique[技术] by (71.8m points)

Why can't I match my string from standard input in Perl?

Why will my script not work correctly?

I follow a YouTube video and worked for the guy.

I am running Perl on Windows using ActiveState ActivePerl 5.12.2.1202

Here is my tiny tiny code block.

print "What is your name?
";
$name = <STDIN>;
if ($name eq "Jon") {
print "We have met before!
";
} else {
print "We have not met before.
";
}

The code automatically jumps to the else statement and does not even check the if statement.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

The statement $name = <STDIN>; reads from standard input and includes the terminating newline character " ". Remove this character using the chomp function:

print "What is your name?
";
$name = <STDIN>;
chomp($name);
if ($name eq "Jon") {
  print "We have met before!
";
} else {
  print "We have not met before.
";
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...