#include "stdio.h"
#include "conio.h"

#define N 3
struct student
{  long int number;
   char name[10];
   float s[4];
 }
main()
 {  struct student stu[N];
    float sum,k;
    int i,j,select;

    printf("\t\t\t***--------------------------------------------***\t\t\t\n");
    printf("\t\t\t***                                            ***\t\t\t\n");
    printf("\t\t\t***  Welcome to The Student's Mangement System ***\t\t\t\n");
    printf("\t\t\t***                                            ***\t\t\t\n");
    printf("\t\t\t***--------------------------------------------***\t\t\t\n");
    printf("\t\t\t***  1.Input      the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  2.Add        the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  3.Delete     the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  4.Change     the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  5.Inquire    the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  6.Sort       the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  7.Statistics the  student's date          ***\t\t\t\n");
    printf("\t\t\t***  0.Escape     the  student's system        ***\t\t\t\n");
    printf("Please input select=:\n");
    scanf("%d",&select);
    switch (select)
    {  case 1: for(i=0;i<3;i++)
              { printf("Please input the student's number=:");
              scanf("%ld",stu[i].number);
              printf("Please input the student's name=:");
              scanf("%s",stu[i].name);
              for (j=0;j<5;j++)
              {printf("Please input the student's score%d=:",j+1);
              scanf("%f",&k);
              stu[i].s[j]=k;}}
        printf("||%number||name||score1||score2||score3||score4||score5||\n");
        for (j=0;j<3;j++)
        {printf("||%ld    ||%s  ||%8.1f ||%8.1f ||%8.1f ||%8.1f ||%8.1f ||\n",stu[j].number,stu[j].name,stu[j].s[0],stu[j].s[1],stu[j].s[2],stu[j].s[3],stu[j].s[4]);
              printf("\n");}
              printf("please wait input any kay continue");
              getch();
              break;}

        }
        }

我们老师说每个人做一个小case，所以我才想把那些语句都弄到case里，是不是case里不能这么复杂呀？帮帮忙，我急着用，谢谢啦！

谢谢了！十分感谢！