单项选择题
A.(*f1)(a); B.*f1(*s); C.fun(&a); D.ch=*f1(s);
A.1,2,3,4,5,6,7,8,9,0, B.2,3,4,5,6,7,8,9,10,1, C.0,1,2,3,4,5,6,7,8,9, D.1,1,1,1,1,1,1,1,1,1,