Write C code

Please answer carefully and faaaast within 60 minutes

A student ID of a university uses 15 digits student ID Formatd,dyd,dade do dod dodaod11d12d1d1adus Example 9 7 8 0 1 3 2 1 3 0 8 OOO 6 0 The last digit d15 is a checksum, which is calculated from the other digits using the following formula: 10- (d1 +3d2 +d3 + 3d4 +d5 + 3d6+d7+ 3d8 + d9+ 3d10 +011+3d12+d13+3d14)%10. If the checksum is 10, replace it with 0. 1. Write a function named readString that takes only an array of character as parameter named data, reads a string of size 13 from the user, and sore it the array data. The function should ask the user to enter a proper string of until the user enters a string of size 15 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 3. 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 a 15-digit student ID Displays valid student ID if digit 15 equals the checksum calculated in part2 or invalid otherwise