# Phone Number

Write a program that cleans up user-entered phone numbers so that they can be sent SMS messages.

The rules are as follows:

- If the phone number is less than 10 digits assume that it is bad
  number
- If the phone number is 10 digits assume that it is good
- If the phone number is 11 digits and the first number is 1, trim the 1
  and use the last 10 digits
- If the phone number is 11 digits and the first number is not 1, then
  it is a bad number
- If the phone number is more than 11 digits assume that it is a bad
  number

We've provided tests, now make them pass.

Hint: Only make one test pass at a time. Disable the others, then flip
each on in turn after you get the current failing one to pass.

To run the tests simply run the command `go test` in the exercise directory.

If the test suite contains benchmarks, you can run these with the `-bench`
flag:

    go test -bench .

For more detailed info about the Go track see the [help
page](http://exercism.io/languages/go).

## Source

Event Manager by JumpstartLab [http://tutorials.jumpstartlab.com/projects/eventmanager.html](http://tutorials.jumpstartlab.com/projects/eventmanager.html)

## Submitting Incomplete Problems
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