单项选择题

有以下程序
struc t STU
char name [10]
int num;
void f1(struct STU c)
struct STU b="LiSiGuo",2042;
c=b;
void f2(struct STU *c)
struct STU b="SunDan",2044);
*c=b;
main ( )
struct STU a="YangSan",2041,b="WangYin",2043;
f1 (

A.; f2 (&
B.;
printf ( "%d