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Task/File-input-output/Eiffel/file-input-output.e

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+class
+    APPLICATION
+
+create
+    make
+
+feature {NONE} -- Initialization
+
+    make
+            -- Run application.
+        do
+            create input_file.make_open_read ("input.txt")
+            create output_file.make_open_write ("output.txt")
+
+            from
+                input_file.read_character
+            until
+                input_file.exhausted
+            loop
+                output_file.put (input_file.last_character)
+                input_file.read_character
+            end
+
+            input_file.close
+            output_file.close
+        end
+
+feature -- Access
+
+    input_file: PLAIN_TEXT_FILE
+    output_file: PLAIN_TEXT_FILE
+
+end