I have an assignment, I need this program in C programming language, not C++!!.I had found couple answers in Chegg, but all of them in C++. Thank you.

Assignment Hexadecimal numerals are integers written in base 16. The 16 digits used are 0 through 9 plus a for digit 10, b for the digit 11, c for the digit 12,d for the digit 13, e for the digit 14, and f for the digit 15. For example, the hexadecimal numeral is same as base 10 numeral 0-9 and the hexadecimal 1d is same the base 10 numeral 29. Write a program to perform addition of two hexadecimal numerals each up to 10 digits. If the result of the addition is more than 10 digits long, then simply give the output message Addition Overflow and not the result of addition. Use arrays to store hexadecimal numerals as arrays of characters. Include a loop to repeat this calculation for new numbers until the user she or he wants to end the program.

How you lose points:

If your code is not formatted properly and I find it hard to read. If your code is not commented properly: Every class file should have a header comment that includes your name and assignment number and briefly documents what the program does. If there are known deficiencies with your program such as known problems or incomplete features, these should be clearly listed in the header comment. Every method should have a method header comment that documents what the method does, what its parameters are, and what it returns. Every complex block of code should have at least a line comment documenting that code's intent. If you change or add to the projects statements. If your source code has print out statements you used for debugging or commented out code you used to try out ideas. Clean up your code before you submit. Do not leave clutter behind