使用线性数据结构（C语言）完成一个“学生成绩管理系统”，能实现下述功能：
1）能录入至少10名学生基本信息
2）能录入学生至少3门课程成绩
3）能求每个学生的总分和平均分
4）能按照总分进行排序
5）能删除某个指定学生信息
6）程序应包含主菜单功能
7)对学生进行查找
8）能修改学生信息
可以自由选用链式结构或顺序结构。

..........

。。。

[此贴子已经被作者于2016-6-27 09:12编辑过]

网上百度搜去。各式代码让你目不转睛。

#include <stdio.h>
#define M 50
 struct student{
    int num;
    char name[10];
    int chinese,english,math;
    int sum;
    double average;
     };
 void new_student(struct student students[]);
 void search_student(struct student students[],int num);
 void row_student(struct student students[]);
 void delete_student(struct student students[],int num);
 int count=0;

int main(void)
 {
  int choice,num,num1;
  struct student students[M];
    printf("                            学生成绩管理系统\n");
     printf("     *********************************************************\n");
    printf("     *                                                       *\n");
    printf("     *  **********************请选择**************************\n");
    printf("     *1:输入学生信息                                         *\n");
    printf("     *2:查询成绩                                             *\n");
    printf("     *3:成绩排序                                             *\n");
    printf("     *4:删除成绩                                             *\n");
    printf("     *0:退出系统                                             *\n");
    printf("     *********************************************************\n");
    printf("\n");
  do{   
    printf("     *   1：输入   2：查询  3：排序   4：删除    0：退出     *\n");
    scanf("%d",&choice);
    switch(choice){
        case 1:new_student(students);break;
        case 2:printf("请输入查询学生的学号num\n");
               scanf("%d",&num);
               search_student(students,num);
               break;
        case 3:row_student(students);break;
        case 4:printf("请输入要删除学生的学号\n");
               scanf("%d",&num1);
               delete_student(students,num1);
               break;
        case 0:break;
        }
    }while(choice!=0);  
  printf("结束\n");
 return 0;
}


void new_student(struct student students[])
{
    struct student s;
    if(count==M){
        printf("已满\n");
        return;
        }
    printf("请输入第%d个学生学号，姓名，语文，英语，数学成绩：\n",count+1);
    scanf("%d%s%d%d%d",&s.num,s.name,&s.chinese,&s.english,&s.math);
    s.sum=s.chinese+s.english+s.math;
    s.average=s.sum/3.0;
    students[count]=s;
    count++;
}


void search_student(struct student students[],int num)
{
    int i;
    for(i=0;i<count;i++)
    {
      if(students[i].num==num)
      {
      printf("该学生总分是：%d\n",students[i].sum);   
      printf("该学生平均分是：%.2f\n",students[i].average);
      break;
      }
      if(i==count-1) printf("无此学生信息\n");
    }
}


void row_student(struct student students[])
{
    int i,j,index;
    struct student temp;
    for(i=0;i<count-1;i++)
  {
   index=i;
   for(j=i+1;j<count;j++)
    {
     if(students[j].sum>students[index].sum)
     {
        index=j;
        temp=students[index];
        students[index]=students[i];
        students[i]=temp;
     }
    }
  }
    printf("成绩排序如下：\n");
    printf ("学号   姓名   语文   英语    数学    总分\n");
    for(i=0;i<count;i++)
    printf("%-8d%-8s%-8d%-8d%-8d%-8d\n",students[i].num,students[i].name,students[i].chinese,students[i].english,students[i].math,students[i].sum);
}


void delete_student(struct student students[],int num)
{
    int i;
    for(i=0;i<count;i++)
    {
      if(students[i].num==num)
      printf("删除成功\n");
      do
      {
      students[i]=students[i+1];
      i++;
      }while(i<count-1);
    }
[b]}
8）能修改学生信息这个部分不会

000