ODR $[$MC$0034]$

Which of the following are ways to avoid violating the one$-$definition rule? Select all that apply.

Pick ONE OR MORE options

avoid using namespace declarations at global scope in header files

if a function is declared in Foo.h$,$ define the function Foo.cpp

mark free, non$-$templated functions that are defined in header files with the inline keyword

never define a templated function and a non$-$templated function in the same namespace with the same name

declare global constants as either extern or constexpr inline

prefix macros with a custom sequence, such as a project slug or the author's initials

$12$ Clear Selection

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