1#include <stdarg.h> 2 3double f (float f1, float f2, float f3, float f4, 4 float f5, float f6, ...) 5{ 6 va_list ap; 7 double d; 8 9 va_start (ap, f6); 10 d = va_arg (ap, double); 11 va_end (ap); 12 return d; 13} 14 15int main () 16{ 17 if (f (1, 2, 3, 4, 5, 6, 7.0) != 7.0) 18 abort (); 19 exit (0); 20} 21