(Go Programming)

The input data file will be named rainfall.txt and will consist of 12 lines, each containing a floating point number

The function will have no parameters. It will return an array of 12 floats and an error.

The function should have 5 separate checks for errors: (1) opening the file, (2) parsing to a float, (3) wrong number of data items in file, (4) closing the file, and (5) scanner error

In all 5 error cases, the function should return a data array along with the error

If no errors occur, the function should return the array of 12 items read from the file along with nil