Is it necessary to attribute const if you put a suffix?

Question

C++ / C#

For example, what is the difference:
const float var1 = 324.1;from the float var1 = 324.1Fsuffix F does it already mean that it is a constant?

Answer 1

A constant is the literal itself (with a suffix). And to a variable you appropriate (in this case - you copy) value of a constant. It looks like this situation:

const int c = 35;
int var = c;

var contains the value copied from the constant. But we can change var? As for the const
modifier itself , it is better to write it wherever possible.

Answer 2

const refers to float var1, not the value it is initialized with. If you want to be able to change the value of var1 later on, const is not needed.