1 #include <stdarg.h> 2 f(float f1,float f2,float f3,float f4,float f5,float f6,...)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 main()15int main () 16 { 17 if (f (1, 2, 3, 4, 5, 6, 7.0) != 7.0) 18 abort (); 19 exit (0); 20 } 21