write a function that will return the number of days between 1 Jan 2017

Using Sunday, 1 Jan 2017 as the reference, {1} write a function that will return the number of days between 1 Jan 2017 and a given date in 2017, {2} write another function that will return the days of the week of the given date. You can codify the day of the week with values 0-6. Your two function prototypesmay look like this:

intnum_days_btwn_dates(date, date);

intday_of_week(date);

Write a program using the above function to print thr number of days from 1 Jan 2017 to a given date and the day of the week of the given date. So a dialouge of your prgram could be(bold is user input):

Enter the date of in the form of yyyy mm dd: 2017 5 20

The number of days from 1-1-2017 to 20-5-2017 is 139.

20-5-2017 is a Saturday

Note that you should print the day of the week in word not in number.