Answer the following statements true (T) or false (F)
1. If a file already exists, you can open it with the flags ios::in | ios::out to preserve its contents.
2. To write to a file, you use the file_write function.
3. The setprecision manipulator cannot be used to format data written to a file.
4. The ios::hardfail bit is set when an unrecoverable error occurs.
1. T
2. F
3. F
4. T
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