How to write a "readit, calcit, writeit" program in C++ that will take 2 txt files with numbers and choose the best one. For ex in TXT 1 I have one number: 123456; in TXT I have 3 numbers: 111111, 222222, 333333. Formula for that is abs(1-1) + abs(2-1) + abs(3-1) + abs(4-1) + abs(5-1) + abs(6-1). The output file has to contain a number from TXT 2 that has the smallest result.