阅读下面的程序；

#include<stdio.h>

struct stu

{

    int num;

    char name[10];

    int age;

};

void fun(struct stu *p)

{

    printf("%s\n",(*p).name);

}

void main()

{

    struct sut students[3]={{9801,"Zhang",20},{9802,"Wang",21},{9803,"Zhao",19}};

    fun(students+2);

}

fun（）函数的功能是（    ）