c++  Given the input file name (datafile.txt) which has the following data:        John   95   3.8   A Based on this file and data in it, answer the questions 5 thru 13 5. Write the declaration section to declare variable names for these data items.  6. Declare an input file stream object.   7. Declare an output file stream object. 8. Write the statement to open the input file (datafile.txt) 9.  Write the statement to open the output file (outfile.txt). 10. Write the statement to read these data items from the input file. 11. Write a statement to send all data to the output file. 12. Write the statement to close the input file. 13. Write the statement to close the output file.

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