filename = ARGV.first
txt = open filename
puts "Here's your file #{filename}:"
print txt.read
puts "Type the filename again: "
file_again = $stdin.gets.chomp
txt_again = open file_again
print txt_again.read
close(txt)
close(txt_again)
The program runs fine till the end, but crashes with the titled error message right after printing the contents of the second file.
I checked the txt, txt_again using (.class) and confirmed that both are File objects. Why isn't close working?
You need to call close on the file object:
txt.close