va_start
[initialize a variable argument list]
SYNOPSIS #include <stdarg.h> void va_start(va_list ap, rightmost);
DESCRIPTION
Use va_start
to initialize the variable argument list, ap,
so that va_arg
can extract values from it. rightmost
is the name of the last explicit argument in the parameter list, the argument
immediately preceding the ellipsis (...)
that flags variable arguments in an ANSI C function header. You can only
use va_start
in a function declared using this ellipsis notation (not, for example,
in one of its subfunctions).
RETURNS
va_start
does not return a result.
COMPLIANCE
ANSI C requires va_start.