Why 6.0 and not 6?

Question

Why is
(4 + 8) / 2
6.0 instead of 6?

Answer 1

It depends on programming language. In python the division outputs a float number whether it's operands are integer or float.

Answer 2

Most probably is Python 3. You should use
int((4 + 8) / 2)

Answer 3

Explicit conversion will make your life easier.

Answer 4

Because the output of this operation is double, not a int

Answer 5

In C, the result is actually 6.