Comparing Values. 1

[TotalInsanity]

Hello again all.

Some more beautiful advice needed please from all of you professional coders :O)

If I have three double values: 3.55, 3.47, 2.24.

I want to take the first double value of 3.55 and find which of the other two values: 3.47, 2.24 is the closest match to the first given value.

I understand this in English, lol, that 3.47 would come out but to compare the values using c++ code, how would I do that?

Any help would be vastly appreciated!

Thanks in Advance.

 

[xwb]

1) Say you have read in the values into x, a, b. I'll just assume you know how to do that.
2) Find the difference

diffa = abs(x - a);
diffb = abs(x - b);

3) The closer one is the one with the smaller difference

closer = diffa < diffb ? diffa: diffb;