please complete in C language

In this assignment, you will write a program that has two functionalities: First, it outputsthe weeks of a Gregorian month given a year number and month name. For example, if theuser requests to see the weeks of January 2021, your program should draw the followingtable on the screen:

Su Mo Tu We Th Fr Sa

1 2 3 4 5 6 7

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

Another functionality of your program is that it should be able to count the numberof days between two dates; e.g. given the dates 01/06/2021 01/12/2021, your programshould prints 6 on the screen; while for input 01/12/2021 01/06/2021, you program mustprint -6 on the screen.1 Program Input CommandsThere are two valid commands for your program: count MM/DD/YYYY mm/dd/yyyyand print MM/YYYY where mm and MM represent months, dd and DD represent days,and yyyy and YYYY represent years. If an invalid command is entered, your program shouldprint an error message.