Why do you need to append an L or F after a value assigned to a C++ constant?

Question

I have looked at quite a few places online and can\'t seem to find a good explanation as to why we should append an F or L after a value assigned to a C++ constant.

Answer 1

Your example does not need it, but the biggest reason I know of to use explicit types on literal values is to make sure that the correct function overload is called.

This can make a large difference in constructors, operator overloads, etc.

Sometimes there is no convenient way to get the literal into the right type, so you have to use a static_cast or put a constructor around the literal.