Calls and call functions in the parameter list

Question

I have the following two (related) questions.

• Is the execution order of the functions called in the list of other parameters of the functions defined by the C or C ++ standard?

• Is the actual calling convention used by the compiler affecting the execution order of the function in the following expression in C / C ++?

  func1(func2(), func3());
  

Thank you for your responses.