This is an example of a one character wonder. That's a program which is absolutely correct except for one misplaced character.
use strict; use warnings; print "Hello World/n";
Hint 1: What you see is what you get.
Hint 2: What you see is what you get -- literally.
Hint 3: If you see 13 characters between then double quotes, then 13 characters are printed.
Hint 4: There is no escape character in the string.
Answer: The statement:
prints "Hello World" a forward slash and a "n". What the programmer should have written was:print "Hello World/n";
print "Hello World\n";