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 %d\n" ,a.num,b.num); } 执行后输出结果是