C PROGRAMMING ONLY PLEASE

Create two files named num1.txt and num2.txt each containing a single decimal number with more than 100 digits.

Write a program that reads these files, and computes the sum of the numbers defined in num1.txt and num2.txt respectively. Your program should store this sum in a file named sum.txt that contains a single decimal number representing this sum.

Extra credit:

Make your program compute and store the product of the given numbers.

Example:

If num1.txt contains

123456789 and num2.txt contains

987654321 then sum.txt contains

1111111110 Deliverable: