in c

A national ID of a country uses 11 digits. national ID Formatd, d d d d d d d d, dood Example 978 0 1 3 2 1 3 0 8 The last digit d11 is a checksum, which is calculated from the other digits using the following formula: 10 - (d1 + 3d2+d3 +34 +d5 +3d6 +d7 + 3d8+d9 +3d10)%10. If the checksum is 10, replace it with o. 1. Write a function named readString that takes only an array of character as parameter named data, reads a string of size 11 from the user, and sorelt the array data. The function should ask the user to enter a proper string of until the user enters a string of size 11 2. Write a function named checksum that takes only one input parameters str of type char" (null-terminated C strings of characters) and calculates and returns the check sum from the first 10 digits Write the main function that Prints your full name and Student ID Define a proper variable to store a c-string Properly call the function readString to read an 11-digit national ID displays valid national ID if the digit 11 equals the checksum calculated in part2 or invalid otherwise 4. Add your name, your University ID number and section number as a comment at the beginning of this program. 3. . . . . Sample Run: Name: Abdullah Aref ID:1122333 Please Enter a 11 Digit national ID:97801321308 Valid ID