C语言使用单链表实现学生信息管理系统

本文实例为大家分享了c语言使用单链表实现学生信息管理系统，供大家参考，具体内容如下

初学数据结构，记录一下学习过程。

运行结果如图：

1.运行界面

2.录入学生信息

3.按照总分进行排序

代码如下：

#define error 0
#define ok 1
#define overflow -1;
typedef int elemtype;
typedef int status;
#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
#include<string.h>
#include<iostream>
typedef struct{
 char name[20];
 char snumber[20];
 char sex[10];
 int math;
 int chinese;
 int english;
}student;
typedef struct lnode{
 student data;
 struct lnode *next;
}lnode,*linklist;
//单链表初始化
status initlist(linklist &l){
 l = new lnode;
 l->next = null;
 return ok;
}
//创建单链表
void createlist(linklist &l,int n){
 linklist r;
 linklist p;
 l = new lnode;
 l->next = null;
 r = l;
 int i;
 for(i = 0;i<n;i++){
  p = new lnode;
  scanf("%s%s%s%d%d%d",&p->data.name,&p->data.snumber,&p->data.sex,&p->data.chinese,&p->data.math,&p->data.english);
  //scanf("%d%d%d",&p->data.chinese,&p->data.math,&p->data.english);
  p->next=null;
  r->next=p;
  r = p;
 }
}


//总分统计
int gradesum(linklist l){
 int sum;
 sum = (l->data.chinese)+(l->data.english)+(l->data.math);
 return sum;
}
//统计所有学生信息
void bianli(linklist l){
 linklist p;
 p = l->next;
 printf("姓名\t学号\t性别\t语文\t数学\t英语\t总分\n");
 while(p){
  printf("%s\t%s\t%s\t",p->data.name,p->data.snumber,p->data.sex);
  printf("%d\t%d\t%d\t%d",p->data.chinese,p->data.math,p->data.english,gradesum(p));
  p = p->next;
  printf("\n");
 }
}
//按照总分排序
void ordersum(linklist &l){
 linklist p,q,tail;

 tail = null;

 while((l->next->next) != tail)
 {
  p = l;
  q = l->next;
  while(q->next != tail)
  {
   if( gradesum(q) <  gradesum(q->next))
   {
    p->next = q->next;
    q->next = q->next->next;
    p->next->next = q;
    q = p->next;
   }
   q = q->next;
   p = p->next;
  }
  tail = q;
 }
 printf("排序完毕！\n");

}
//根据语文进行排序
void orderchinese(linklist &l){
 linklist p,q,tail;

 tail = null;

 while((l->next->next) != tail)
 {
  p = l;
  q = l->next;
  while(q->next != tail)
  {
   if((q->data.chinese) < (q->next->data.chinese))
   {
    p->next = q->next;
    q->next = q->next->next;
    p->next->next = q;
    q = p->next;
   }
   q = q->next;
   p = p->next;
  }
  tail = q;
 }
 printf("排序完毕！\n");

}
//根据英语进行排序
void orderenglish(linklist &l){
 linklist p,q,tail;

 tail = null;

 while((l->next->next) != tail)
 {
  p = l;
  q = l->next;
  while(q->next != tail)
  {
   if((q->data.english) < (q->next->data.english))
   {
    p->next = q->next;
    q->next = q->next->next;
    p->next->next = q;
    q = p->next;
   }
   q = q->next;
   p = p->next;
  }
  tail = q;
 }
 printf("排序完毕！\n");

}
//根据数学进行排序
void ordermath(linklist &l){
 linklist p,q,tail;

 tail = null;

 while((l->next->next) != tail)
 {
  p = l;
  q = l->next;
  while(q->next != tail)
  {
   if((q->data.math) < (q->next->data.math))
   {
    p->next = q->next;
    q->next = q->next->next;
    p->next->next = q;
    q = p->next;
   }
   q = q->next;
   p = p->next;
  }
  tail = q;
 }
 printf("排序完毕！\n");

}
//删除学生信息
status listdelete(linklist &l,int i){
 linklist p;
 linklist q;
 int j;
 p = l;j = 0;
 while((p->next)&&(j<i-1)){
  p = p->next;
  ++j;
 }
 if(!(p->next)||(j>i-1)) return error;
 q = p->next;
 p->next = q->next;
 delete q;
 return ok;
}
void deletestudent(linklist &l){
 int i;
 printf("请输入需要删除的学生序号\n");
 scanf("%d",&i);
 listdelete(l,i);
 printf("删除完毕！\n");

}
//插入学生信息
status listinsert(linklist &l,int i,char name[],char snumber[],char sex[],int chinese,int math,int english){
 linklist p = l;
 linklist s;
 int j = 0;
 while(p && (j<i-1)){
  p = p->next;
  ++j;
 }
 if(!p||j>i-1) return error;
 s = new lnode;
 strcpy(s->data.name,name);
 strcpy(s->data.snumber,snumber);
 strcpy(s->data.sex,sex);
 s->data.chinese = chinese;
 s->data.math = math;
 s->data.english = english;
 s->next = p->next;
 p->next = s;
 return ok;
}
void insertstudent(linklist &l){
 int n;
 char name[20],snumber[20],sex[10];
 int chinese,math,english;
 printf("请输入插入的位置n：");
 scanf("%d",&n);
 printf("请依次输入学生的姓名、学号、性别、语文成绩、数学成绩、英语成绩、总分\n");
 scanf("%s%s%s%d%d%d",&name,&snumber,&sex,&chinese,&math,&english);
  listinsert(l,n,name,snumber,sex,chinese,math,english);

}
void menu(){
 printf("\t\t\t  ======================================================\n\n");
 printf("\t\t\t ‖                学生信息管理系统                    ‖ \n\n");
 printf("\t\t\t  ======================================================\n\n"); 
 printf("\t\t\t  ===================系统功能菜单=======================\n");
 printf("\t\t\t ‖  ------------------------------------------------  ‖\n");
 printf("\t\t\t ‖  ------------------------------------------------  ‖ \n");
 printf("\t\t\t  ======================================================  \n");
 printf("\t\t\t ‖    0.录入学生信息      ‖ ‖  1.统计学生信息       ‖     \n");
 printf("\t\t\t  ======================================================\n"); 
 printf("\t\t\t ‖    2.按照总分排序      ‖ ‖  3.按照语文成绩排序   ‖     \n");
 printf("\t\t\t  ====================================================== \n");
 printf("\t\t\t ‖    4.按照数学成绩排序  ‖ ‖  5.按英语成绩排序     ‖    \n");
 printf("\t\t\t  ======================================================\n");
 printf("\t\t\t ‖    6.删除学生信息      ‖ ‖  7.插入学生信息       ‖    \n");
 printf("\t\t\t  ====================================================== \n");
 printf("\t\t\t ‖    8.退出系统          ‖         \n");
 printf("\t\t\t  ==========================     \n");
 printf("\t\t\t     -----------------------------------------------  \n");
 printf("\n\n\n");
}
void luru(linklist &l){
 int n;
 printf("请输入学生数目n：");
 scanf("%d",&n);
 printf("请依次输入学生的姓名、学号、性别、语文成绩、数学成绩、英语成绩、总分\n");
 createlist(l,n);
 printf("学生信息已录入完毕！\n");
}
void main(int args,char argv[]){
 linklist p;
 initlist(p);
 int i;
 do{
  menu();
  scanf("%d",&i);
  getchar();
  switch(i){
  case 0:luru(p);break;
  case 1:bianli(p);break;
  case 2:ordersum(p);bianli(p);break;
  case 3:orderchinese(p);bianli(p);break;
  case 4:ordermath(p);bianli(p);break;
  case 5:orderenglish(p);bianli(p);break;
  case 6: deletestudent(p);break;
  case 7:insertstudent(p);break;
  case 8:exit(0);
  }
 }while(i != -1);
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。