Question

I need to find a way, such that user has to input 2 numbers (int) and for every different value a single output (int preferably!) is returned.
Say user enters 6, 8 it returns k when user enter anything else like 6,7 or 9,8 or any other input m, n except for 6, 8 (even if only one input is changed) a completely different output is produced. But the thing is, it should be unique for only that m, n so I cant use something like m*n because 6 X 4 = 24 but also, 12 X 2 = 24 so the output is not unique, so I need to find a way where for every different input, there is a totally different output that is not repeated for any other value.

EDIT: In response to Nicolas: the input range can be anything but will be less then 1000 (but more then 1 of course!)

EDIT 2: In response to Rawling, I can use long (Int64) but not preferably use float or doulbe, becuase this output will be used in a for loop, and float and double are terrible for for loop, you can check it here

Answer 1

Since your two numbers are less than 1000, you can do k = (1000 * x1) + x2 to get a unique answer. The maximum value would be 999999, which is well within the range of a 32-bit int.