I'm not sure if I need to ask this in the math site or here. I'm actually a developer and I searched many websites to find out what the whole and fraction part of a number is called in English (naming variables) and I couldn't find it so I thought I might ask it here.
For example the number 4.17, what the integer part(4) and the fraction part(17) are called?
Best Answer
You've already used the correct terminology: integer/integral part and fractional part.
Fractional part - Wikipedia
You also might see noninteger part, as in:
Weisstein, Eric W. "Fractional Part." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/FractionalPart.html