Can we use floating variables in for loop

Answer 1

Yes, we can.
for (float i = 0; i < 5.0f; i++) {}

We can also make more descriptive questions and for god's sake tell each other what language you are trying to get the answer in.

Answer 2

https://code.sololearn.com/c3O0QsBLlmK5/?ref=app

Answer 3

Exactly.
No languages are same, and poor All About JUMP_LINK__&&__Python__&&__JUMP_LINK did not want to look up your profile just to see what languages do you use, so that's why.