单项选择题

有以下程序
#include<stdio.h>
#include<string.h>
Struct A
int a;char b[10];double c;;
struct A f(struct A t);
main()
struct A a=1001,"ZhangDa",1098.0;
a=f(

A.;printf("%d,%s,%6.1f\n",a.a,a.b,a.c);

struct