新手问题 求改正

#include<stdio.h>

#include<stdlib.h>

#define SIZE 100

#define LEN sizeof(struct student)

struct student

{

	char name[20];

	long number;

	char sex;

	int score[3];

}stu[100];

int input(struct student *p)

{

	int i;

	p->name[0]='a';

	printf("请输入学生姓名 学号 性别 分数 以#结束\n");

	for(i=0;i<SIZE;i++)

	{

			scanf("%s%ld%c%d%d%d",(p+i)->name,&(p+i)->number,&(p+i)->sex,&(p+i)->score[0],&(p+i)->score[1],&(p+i)->score[2]);

			if(((p+i)->name[0])=='#')

		break;

	}

	printf("n=%d\n\n",i-1);

	return i-1;

}

void output(struct student *p,int n)

{

	int i=0;

	for(;i<n;i++)

		printf("%-10s%-12ld     %c%5d%5d%5d\n",(p+i)->name,(p+i)->number,(p+i)->sex,(p+i)->score[0],(p+i)->score[1],(p+i)->score[2]);

}

int main()

{

	int n;

	struct student *p;

	p=stu;

	n=input(p);

	output(p,n);

	return 0;

}