Stepper Absolute Position ... how to

What do you not understand about using an int with the numbers greater than your resolution?

What I don't understand maybe is the nature of INT ... I consider integer number the number with no decimals so 1, 2, 3 ..... but 0.5 is a decimal number ...
so my question is: can I define my function as INT and have decimal values ? like 10.5 10.8 ecc. ecc ?