The problem of finding the average number, how to solve?

Question

C++ / C#

How to write with a full if statement?
Three numbers are given. Find the average of them (the number located between the largest and smallest)

Answer 1

Your problem can only have three answers: a, b, or c.
Accordingly, write only one condition for answer a, one condition for answer b, and one condition for answer c. You don't need anything else.
If you want to save money - write one condition for a, the second for b, and everything that goes further will be option c.

Answer 2

Well, where is your code, where did you try and fail?