Reading&Writng Files

exercise1.rb

-puts "Hello World!"
+#
+print "Hello World!"
 puts "Hello Again"
 puts "I like typing this."
 puts "This is fun"

exercise16.rb

+filename = ARGV.first
+
+puts "We're going to erase #{filename}"
+puts "If you don't want that, hit CTRL-C (^C)."
+puts "If you do want that, hit RETURN."
+
+$stdin.gets
+
+puts "Opening the file..."
+target = open(filename, 'w')
+
+puts "Truncating the file.  Goodbye!"
+target.truncate(0)
+
+puts "Now I'm going to ask you for three lines."
+
+print "line 1: "
+line1 = $stdin.gets.chomp
+print "line 2: "
+line2 = $stdin.gets.chomp
+print "line 3: "
+line3 = $stdin.gets.chomp
+
+puts "I'm going to write these to the file."
+
+target.write(line1)
+target.write("\n")
+target.write(line2)
+target.write("\n")
+target.write(line3)
+target.write("\n")
+
+puts "And finally, we close it."
+target.close
\ No newline at end of file