how can I store values in two arrays exchangeably, (C Language)?

Question

these values are read from a text file.

Answer 1

I do not understand your question. What do you mean by "exchangeably"?

Could you provide an example of the process you are trying to implement?

Answer 2

the finest thank you to do a dictionary look-up of looking an factor's area in an array is to maintain a hash table, even inspite of the incontrovertible fact that a binary seek will do the interest nicely sufficient for looked after arrays.