c/c++ notation of double floating point values

Question

What\'s the notation for double precision floating point values in C/C++?

.5 is representing a double or a float value?

I\'m pretty sure 2.0

Answer 1

It's double. Suffix it with f to get float.

And here is the link to reference document: http://en.cppreference.com/w/cpp/language/floating_literal