typedef struct{	char	c[510];} s510;typedef struct{	char	c[511];} s511;s510	G510, s1;s511	G511;int	I, J;double	D;void main(void);void f0(double D, ...);s510 f1(double D, ...);void f2a(s510 S);void f2b(s511 S);void main(void){	f0(D, I, J);	s1 = f1(D, I, D);	f2a(G510);	f2b(G511);}