Using and returning output in C macro

Question

I\'m trying to instrument some code to catch and print error messages. Currently I\'m using a macro somethng like this:

#define my_function(x) \\
  switch(functi         


        

Answer 1

there is no need to declare variable if your function is returning something then you can directly get that value. For example:

#define FOO(A) do_something(A)

Here do_something returns some integer. Then you can easily use it like:

int a = FOO(a);