Is there a way to make passing by reference, and passing by value explicit in the function call?

Question

If you were to look at this code,

int x = 0;
function(x);
std::cout << x << \'\\n\';

you would not be able to verify through any me

Answer 1

If you use MS VC++ then maybe it will be useful information about source-code annotation language (SAL) http://msdn.microsoft.com/ru-ru/library/hh916383.aspx