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# SPMS
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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#include <stdlib.h>
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typedef struct score
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{
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int score_DS; //数据结构成绩
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int score_math; //高等数学成绩
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int score_english; //大学英语成绩
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}Score;
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typedef struct Student
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{
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char name[100]; //姓名
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char num[100]; //学号
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char sex; //性别 (m代表女生f代表男生)
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int age; //年龄
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Score score; //成绩
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}stu;
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typedef struct LNode
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{
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stu data;
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struct LNode *next;
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}LinkList;
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char nam[100];//名字
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char nu[100];//学号
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char s;//性别
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int ag;//年龄
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Score sc;//成绩
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void menu()/* 菜单界面*/
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{
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printf("\t\t\t ******************************************************\n\n");
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printf("\t\t\t * 学生成绩管理系统 * \n\n");
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printf("\t\t\t ******************************************************\n\n");
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printf("\t\t\t*********************系统功能菜单*************************\n");
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printf("\t\t\t ---------------------- ---------------------- \n");
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printf("\t\t\t ********************************************* \n");
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printf("\t\t\t * 0.系统帮助及说明 * * 1.刷新学生信息 * \n");
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printf("\t\t\t ********************************************* \n");
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printf("\t\t\t * 2.查询学生信息 * * 3.修改学生信息 * \n");
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printf("\t\t\t ********************************************* \n");
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printf("\t\t\t * 4.增加学生信息 * * 5.按学号删除信息 * \n");
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printf("\t\t\t ********************************************* \n");
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printf("\t\t\t * 6.显示当前信息 * * 7.保存当前学生信息* \n");
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printf("\t\t\t ********************** ********************** \n");
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printf("\t\t\t * 8.退出系统 * \n");
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printf("\t\t\t ********************** \n");
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printf("\t\t\t ---------------------- ---------------------- \n");
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}
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void help()/*帮助界面*/
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{
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printf("\n\t\t\t0.欢迎使用系统帮助！\n");
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printf("\n\t\t\t1.初次进入系统后,请先选择增加学生信息;\n");
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printf("\n\t\t\t2.按照菜单提示键入数字代号;\n");
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printf("\n\t\t\t3.增加学生信息后,切记保存;\n");
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printf("\n\t\t\t4.谢谢您的使用！\n");
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}
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void InitList(LinkList *&L)//初始化链表
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{
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L=(LinkList *)malloc(sizeof(LinkList));
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L->next=NULL;
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}
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void ListInsert(LinkList *&L,LinkList *p)//插入新的节点
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{
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LinkList *q=NULL;
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q=L;
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p->next=q->next;
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q->next=p;
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}
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void addstu(LinkList *&L)//增加新的学生
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{
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printf("请输入学生的信息：\n");
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printf("学号：");
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scanf("%s",nu);
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LinkList *q=L->next;
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while(q!=NULL ) //用于判断学生信息是否已经存在
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{
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if(0==strcmp(q->data.num,nu))
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{
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printf("该学生已存在\n");
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break;
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}
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q=q->next;
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}
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if(q==NULL)
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{
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LinkList *p;
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InitList(p);
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strcpy(p->data.num,nu);
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printf("姓名") ;
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scanf("%s",nam) ;
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strcpy(p->data.name,nam);
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printf("性别：（m为男 f为女）");
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scanf(" %c",&s);
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p->data.sex=s;
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printf("年龄：");
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scanf("%d",&ag);
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p->data.age=ag;
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printf("数据结构成绩：");
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scanf("%d",&sc.score_DS);
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while(sc.score_DS<0||sc.score_DS>100)
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{
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printf("输入有误，请重新输入\n");
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scanf("%d",&sc.score_DS);
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}
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p->data.score.score_DS=sc.score_DS;
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printf("高等数学成绩：");
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scanf("%d",&sc.score_math);
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while(sc.score_math<0||sc.score_math>100)
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{
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printf("输入有误，请重新输入\n");
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scanf("%d",&sc.score_math);
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}
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p->data.score.score_math=sc.score_math;
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printf("大学英语成绩：");
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scanf("%d",&sc.score_english);
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while(sc.score_english<0||sc.score_english>100)
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{
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printf("输入有误，请重新输入\n");
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scanf("%d",&sc.score_english);
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}
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p->data.score.score_english=sc.score_english;
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ListInsert(L,p);
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}
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}
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void deletestu(LinkList *L)//删除学生
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{
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printf("请输入您要删除的学生的学号:");
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scanf("%s",nu);
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//判断
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LinkList *p,*pre;
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if(L->next==NULL)
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{
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printf("还没有学生信息,请增加学生信息\n");
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return;
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}
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pre=L;
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p=pre->next;
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int judge=0;
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while(p)
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{
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if(0==strcmp(p->data.num,nu))
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{
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judge=1;
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pre->next =p->next;
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free(p);
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printf("删除学生成功\n");
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break;
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}
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pre=p;
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p=p->next;
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}
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if(judge==0)
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printf("这个学生不存在\n");
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}
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void changestu(LinkList *L)//改变学生信息
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{
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int judge=0;
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printf("请输入您要修改学生的学号：\n");
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scanf("%s",nu);
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LinkList *q=L->next;
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while(q!=NULL )
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{
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if(0==strcmp(q->data.num,nu))
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{
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judge=1;
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printf("请输入您要修改的信息选项：1.姓名 2. 成绩(数据结构，高等数学，大学英语) 3.年龄 \n");
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int choose;
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scanf("%d",&choose);
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switch(choose)
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{
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case 1:
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printf("请输入您要修改的名字：");
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scanf("%s",nam);
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printf("修改的名字为：%s\n",nam);
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strcpy(q->data.name,nam);
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printf("修改名字成功！\n");
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break;
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case 2:
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printf("请输入您要修改的成绩");
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scanf("%d%d%d",&sc.score_DS,&sc.score_math,&sc.score_english);
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printf("修改的数据结构成绩为：%d 修改的高等数学成绩为：%d 修改的大学英语成绩为：%d\n",sc.score_DS,sc.score_math,sc.score_english);
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q->data.score=sc;
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printf("修改成绩成功！\n");
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break;
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case 3:
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printf("请输入您要修改的年龄：");
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scanf("%d",&ag);
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printf("修改的年龄为：%d\n",ag);
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q->data.age=ag;
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printf("修改年龄成功！\n");
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break;
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default :
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printf("请输入正确的选项\n");
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break;
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}
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}
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q=q->next;
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}
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if(judge==0)
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{
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printf("该生不存在\n");
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}
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}
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void findstu(LinkList *L)//按学号或者姓名查找学生并输出该生信息
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{
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int flag;
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printf("1.按学号查询：\n");
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printf("2.按姓名查询：\n");
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printf("请输入查询方式：");
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scanf("%d",&flag);
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if(flag==1){
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printf("请输入该生学号：");
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scanf("%s",nu);
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//判断
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LinkList *q=L->next;
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while(q!=NULL )
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{
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if(strcmp(q->data.num,nu)==0)
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{
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printf("姓名：%s\n",q->data.name);
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printf("学号：%s\n",q->data.num);
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printf("性别：%c\n",q->data.sex);
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printf("年龄：%d\n",q->data.age);
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printf("数据结构成绩：%d\n",q->data.score.score_DS);
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printf("高等数学成绩：%d\n",q->data.score.score_math);
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printf("大学英语成绩：%d\n",q->data.score.score_english);
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break;
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}
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q=q->next;
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}
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if(q==NULL)
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printf("该生不存在\n");
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}else{
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printf("请输入该生姓名：");
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scanf("%s",nam);
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LinkList *q=L->next;
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while(q!=NULL)
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{
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if(strcmp(q->data.name,nam)==0)
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{
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printf("姓名：%s\n",q->data.name);
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printf("学号：%s\n",q->data.num);
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printf("性别：%c\n",q->data.sex);
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printf("年龄：%d\n",q->data.age);
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printf("数据结构成绩：%d\n",q->data.score.score_DS);
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printf("高等数学成绩：%d\n",q->data.score.score_math);
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printf("大学英语成绩：%d\n",q->data.score.score_english);
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break;
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}
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q=q->next;
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}
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if(q==NULL)
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printf("该生不存在\n");
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}
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}
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void display(LinkList *&L)//浏览全部学生信息
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{
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LinkList *q=L->next;
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if(q==NULL)
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{
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printf("还没有学生信息，请增加学生信息\n");
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return;
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}
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while(q)
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{
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printf("姓名：%s\t",q->data.name);
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printf("学号：%s\t",q->data.num);
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printf("性别：%c\t",q->data.sex);
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printf("年龄：%d\t",q->data.age);
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printf("数据结构成绩：%d\t",q->data.score.score_DS);
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printf("高等数学成绩：%d\t",q->data.score.score_math);
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printf("大学英语成绩：%d\n",q->data.score.score_english);
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q=q->next;
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}
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}
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void sort(LinkList *L)//按学号排序排序 并输出排序后的结果
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{
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LinkList *q,*p,*r=L->next;
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//判断
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if(r==NULL)
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{
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printf("还没有学生信息，请增加学生信息\n");
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return;
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}
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while(r) //两层循环完成排序
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{
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p=r;
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q=r->next;
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LinkList *tmp;//用于排序时暂存节点
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InitList(tmp);
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while(q)
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{
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if(q->data.num < p->data.num) //学号由小到大
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{
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/*先复制q结点信息到tmp*/
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strcpy(tmp->data.num,q->data.num);
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strcpy(tmp->data.name,q->data.name);
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tmp->data.sex=q->data.sex;
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tmp->data.age=q->data.age;
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tmp->data.score=q->data.score;
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/*再复制p结点信息到q*/
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strcpy(q->data.num,p->data.num);
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strcpy(q->data.name,p->data.name);
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q->data.sex=p->data.sex;
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q->data.age=p->data.age;
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q->data.score=p->data.score;
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/*最后复制exchange结点信息到p*/
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strcpy(p->data.num,tmp->data.num);
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strcpy(p->data.name,tmp->data.name);
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p->data.sex=tmp->data.sex;
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p->data.age=tmp->data.age;
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p->data.score=tmp->data.score;
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}
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q=q->next;
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}
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r=r->next;
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}
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printf("刷新后的学生信息是：\n");
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display(L);
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}
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void saveStuDentFile(LinkList * &L)//保存学生信息到文件
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{
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FILE *fp;
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LinkList *p=L->next;
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if((fp=fopen("student.txt","w"))==NULL)// 以可写的方式打开当前目录下的.txt
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{
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printf("不能打开此文件，请按任意键退出\n");
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exit(1); //异常退出
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}
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while(p)
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{
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fprintf(fp,"%s %s %c %d %d %d %d \n",p->data.num,p->data.name,p->data.sex,p->data.age,p->data.score.score_DS,p->data.score.score_math,p->data.score.score_english);
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p=p->next;
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printf("保存成功\n");
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}
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fclose(fp);
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}
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void readStuDentput (LinkList *&L) //运行前把文件内容读取到电脑内存
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{
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FILE *fp;
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fp=fopen("student.txt","rb"); //以只读方式打开当前目录下的.txt
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if(fp==NULL)
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{
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printf("文件不存在\n");
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exit(0); //终止程序
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}
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int i=0;
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while(!feof(fp))
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{
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char nu[100];//学号
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char nam[100];//名字
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char s;//性别
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int ag;//年龄
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score sc;//成绩
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fscanf(fp," %s %s %c %d %d %d %d",nu,nam,&s,&ag,&sc.score_DS,&sc.score_math,&sc.score_english);
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i++;
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}
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fclose(fp);
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FILE *FP;
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FP=fopen("student.txt","rb"); //以只读方式打开当前目录下的.txt
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if(FP==NULL)
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{
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printf("无法打开文件\n");
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exit(0); //终止程序
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}
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int b=i-1;
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int j=1;
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while(!feof(FP))
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{
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fscanf(FP,"%s %s %c %d %d %d %d",nu,nam,&s,&ag,&sc.score_DS,&sc.score_math,&sc.score_english);
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LinkList *n=(LinkList *)malloc(sizeof(LinkList));
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strcpy(n->data.num,nu);//把后者的内容拷贝到前者中
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strcpy(n->data.name,nam);//把后者的内容拷贝到前者中
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n->data.sex=s;
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n->data.age=ag;
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n->data.score=sc;
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ListInsert(L,n);//插入新的节点
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n=n->next;
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if(j==b)
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break;
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j++;
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}
|
|
|
fclose(FP); //关闭文件
|
|
|
}
|
|
|
|
|
|
int main()
|
|
|
{
|
|
|
LinkList *L;
|
|
|
InitList(L);
|
|
|
readStuDentput (L); //运行前把文件内容读取到电脑
|
|
|
int choose;
|
|
|
while(1)
|
|
|
{
|
|
|
printf("\n");
|
|
|
menu(); //功能菜单
|
|
|
printf("请输入您的选择：\n");
|
|
|
scanf("%d",&choose);
|
|
|
switch(choose)
|
|
|
{
|
|
|
case 0://系统帮助及说明
|
|
|
help();
|
|
|
break;
|
|
|
case 1://刷新信息（按学号排序）
|
|
|
sort(L);
|
|
|
break;
|
|
|
case 2: //查询学生信息
|
|
|
findstu(L);
|
|
|
break;
|
|
|
case 3://修改学生信息
|
|
|
changestu(L);
|
|
|
break;
|
|
|
case 4://增加学生信息
|
|
|
addstu(L);
|
|
|
break;
|
|
|
case 5://删除学生信息
|
|
|
deletestu(L);
|
|
|
break;
|
|
|
case 6://输出所有学生的信息
|
|
|
display(L);
|
|
|
break;
|
|
|
case 7://保存学生信息到文件
|
|
|
saveStuDentFile(L);
|
|
|
break;
|
|
|
case 8://退出
|
|
|
printf("谢谢使用！");
|
|
|
exit(0);
|
|
|
default:
|
|
|
printf("请输入正确的选择\n");
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
return 0;
|
|
|
} |
