以下程序运行后的输出结果是______。#include int f(int n);void main(){ int a=3,s;s=f(a);s=s+f(a); printf("%d\n",s);}int f(int n){ static int a=1;n+=a++;return n;}
A. 9
B. 8
C. 7
D. 10
横线处不能填写的语句是( )。#include struct S{ int a;int b; };void main(){ struct S a, *p=&a; a.a=99; printf( "%d\n" , __________ );}
A. a.a
B. *p.a
C. p->a
D. (*p).a