Design and implement a simple line editing system. The system provides five sub-editing commands: open file name: The specified file is read into memory quit: to write back the file being edited file, exit the editing system list n1- n2: n1 to n2 Display the contents of the line del row number, column number, the number of characters: delete the specified position from the specified number of characters ins line number, column number, the string: insert string in the specified location.

line_editing_system.cpp

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