How to do a floor division in C++?

Answer 1

Use type casting as follows :
https://code.sololearn.com/cUfb02FD8JXo/?ref=app

Answer 2

Dividing 2 int variables is floor division only.
7 / 2 = 3, 6 / 2 = 3, 5 / 2 = 2 and so on.