A.2.2 How Variadic Functions are Defined and Used
Defining and using a variadic function involves three steps:
- Define the function as variadic, using an ellipsis
(`...') in the argument list, and using special macros to
access the variable arguments. See Receiving Arguments.
- Declare the function as variadic, using a prototype with an
ellipsis (`...'), in all the files which call it.
See Variadic Prototypes.
- Call the function by writing the fixed arguments followed by the
additional variable arguments. See Calling Variadics.