How to format data input?

Question

C++ / C#

Is it possible to show kg at the end when entering data in scanf, or see
How to make such a data entry format?
Those. does the user enter data, such as mass, and is the unit always written next to it?

Answer 1

Is it possible, when entering data in scanf, to show at the end kg or cm.

No.

Answer 2

It's possible, but rather annoying. Through ncurses and two windows for example.