编了好几天了，一直没有编出来，求大神指点#include<stdio.h>
#define maxnumber 10;
int main()
{int a;
int num[10];
int score[10][3];
float aver[10];
void input(long num[],int score[][3],float aver[],maxnumber);
void search(long num[], int score[][3],float aver[],maxnumber);
void output(long num[], int score[][3],float aver[],maxnumber);
              printf("菜单\n");
printf("-------------------------------\n");
printf("1.请输入学生的学号和成绩\n");
printf("2查询学生的成绩\n");
printf("3.打印输出学生成绩\n");
printf("0.退出系统\n");
printf("-------------------------------\n");
do
{
    printf("请选择（0-3）:\n");
scanf("%d",&a);
if(a<0||a>3)
printf("输入错误\n");
else
switch(a)
{
case 0:printf("谢谢使用！\n");break;
case 1:input(num,score,aver);
    break;
case 2:search(num,score,aver);break;
case 3:printf("正在打印...\n");
    output(num,score,aver);break;        
default:printf("输入错误!请重新输入\n");
}
while(a!=0);
return 0;
}



void input(long num[], int score[][3],float aver[],maxnumber)
{int i,j;
for (i=0;i<maxnumber;i++)
  {  printf("学号为：");
     scanf("%ld",&num[i]);
     printf("\n各科成绩英语 高数 计算机为：\n");
     aver[i]=0;
     for (j=0;j<3;j++)
       { scanf("%d",&score[i][j]);
          aver[i]+=score[i][j];
       }
     aver[i]/=3;
     }
}

void serch(long num[],int score[][3],float aver[],maxnumber)
{int i,j,t;
  printf(" 你的学号是：\n");
  for (i=0;i<10;i++)
      if(t==num[i])
    { printf ("%8ld",num[i]);
      for (j=0;j<3;j++)
          printf("%5d",score[i][j]);
      printf("%8.1f",aver[i]);
      printf("\n");}}

void output(long num[], int score[][3],float aver[],maxnumber)
{ int i,j;
  printf("    学号 英语 高数 计算机 平均分\n");
  for (i=0;i<n;i++)
    { printf ("%8ld",num[i]);
      for (j=0;j<3;j++)
          printf("%5d",score[i][j]);
      printf("%8.1f",aver[i]);
      printf("\n");
      }
 }

#include<stdio.h>
#define maxnumber 10

void input(long num[], int score[][3],float aver[]);
void search(long num[], int score[][3],float aver[]);
void output(long num[], int score[][3],float aver[]);

int main()
{
    int a;
    long num[10];
    int score[10][3];
    float aver[10];
    do
    {
        printf("\n菜单\n");
        printf("-------------------------------\n");
        printf("1.请输入学生的学号和成绩\n");
        printf("2查询学生的成绩\n");
        printf("3.打印输出学生成绩\n");
        printf("0.退出系统\n");
        printf("-------------------------------\n");
        printf("请选择（0-3）:\n");
        scanf("%d",&a);
        if(a<0||a>3)
            printf("输入错误\n");
        else
            switch(a)
            {
                case 0:
                    printf("谢谢使用！\n");
                    break;
                case 1:
                    input(num,score,aver);
                    break;
                case 2:
                    search(num,score,aver);
                    break;
                case 3:
                    printf("正在打印...\n");
                    output(num,score,aver);
                    break;
                default:
                    printf("输入错误!请重新输入\n");
            }
    }
    while(a!=0);
    return 0;
}

void input(long num[], int score[][3],float aver[])
{
    int i,j;
    for (i=0; i<maxnumber; i++)
    {
        printf("学号为：");
        scanf("%ld",&num[i]);
        printf("\n各科成绩英语 高数 计算机为：\n");
        aver[i]=0;
        for (j=0; j<3; j++)
        {
            scanf("%d",&score[i][j]);
            aver[i]+=score[i][j];
        }
        aver[i]/=3;
    }
}

void search(long num[],int score[][3],float aver[])
{
    long i,j,t;
    printf(" 你的学号是：\n");
    scanf("%ld",&t);
    for (i=0; i<maxnumber; i++)
        if(t==num[i])
        {
            printf ("%8ld",num[i]);
            for (j=0; j<3; j++)
                printf("%5d",score[i][j]);
            printf("%8.1f",aver[i]);
            printf("\n");
        }
}

void output(long num[], int score[][3],float aver[])
{
    int i,j;
    printf("    学号 英语 高数 计算机 平均分\n");
    for (i=0; i<maxnumber; i++)
    {
        printf ("%8ld",num[i]);
        for (j=0; j<3; j++)
            printf("%5d",score[i][j]);
        printf("%8.1f",aver[i]);
        printf("\n");
    }
}