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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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struct time
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{
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int hour;
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int minute;
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};
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struct student
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{
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int no;
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char classno[20];
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char name[20];
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struct time begin,end;
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struct student *next;
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};
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FILE *pf;
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typedef struct student STU;
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STU *create_student();
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void end_money(STU *head);
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void select_no(STU *head);
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void select_classno(STU *head);
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void select_name(STU *head);
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void add_student(STU *head);
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void delect_student(STU *head);
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void change_student(STU *head);
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void printf_student(STU *head);
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int menu_select();
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void show_all(STU *head);
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void student_file(STU *head);
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STU *studebt_open();
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int main()
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{
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STU *head;
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int n=1;
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while(n)
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{
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switch(menu_select())
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{
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case 1:
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{
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system("cls");
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head=create_student();
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student_file(head);
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printf("初始化信息成功！（信息已成功录入student文件）\n");
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break;
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}
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case 2:
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{
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system("cls");
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head=studebt_open();
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end_money(head);
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break;
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}
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case 3:
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{
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system("cls");
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head=studebt_open();
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select_no(head);
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break;
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}
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case 4:
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{
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system("cls");
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head=studebt_open();
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select_classno(head);
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break;
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}
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case 5:
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{
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system("cls");
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head=studebt_open();
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select_name(head);
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break;
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}
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case 6:
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{
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system("cls");
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head=studebt_open();
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change_student(head);
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break;
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}
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case 7:
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{
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system("cls");
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head=studebt_open();
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add_student(head);
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break;
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}
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case 8:
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{
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system("cls");
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head=studebt_open();
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delect_student(head);
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break;
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}
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case 9:
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{
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system("cls");
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head=studebt_open();
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show_all(head);
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}
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case 0:
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{
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n=0;
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student_file(head);
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printf("本次操作成功，已录入在案！\n");
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return 0;
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break;
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}
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}
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}
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system("pause");
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return 0;
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}
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int menu_select()
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{
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int i;
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printf("\t\t**************************************\t\t\n");
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printf("1.__初始化学生信息\n");
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printf("2.__结账\n");
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printf("3.__按学号查询\n");
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printf("4.__按班级查询\n");
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printf("5.__按姓名查询\n");
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printf("6.__修改学生上机档案\n");
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printf("7.__增添学生信息\n");
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printf("8.__删除学生信息\n");
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printf("9.__显示全部上机学生信息\n");
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printf("0.__退出系统\n");
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printf("\t\t*****请选择想要实现的功能序号*****\t\t\n");
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scanf("%d",&i);
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return i;
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}
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STU *create_student()
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{
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STU *p,*head;
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int no,flag=1;
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char classno[20],name[20];
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int i,n,begin_hour,begin_minute,end_hour,end_minute;
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while(flag)
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{
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p=(STU*)malloc(sizeof(STU));
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printf("请输入学号");
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scanf("%d",&no);
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printf("请输入班级");
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scanf("%s",&classno);
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printf("请输入姓名");
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scanf("%s",&name);
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printf("请输入上机时间");
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scanf("%d%d",&begin_hour,&begin_minute);
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printf("请输入下机时间");
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scanf("%d%d",&end_hour,&end_minute);
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p->next=NULL;
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head->next=p;
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head=p;
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printf("停止输入请按0继续输入请按1\n");
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scanf("%d",&flag);
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}
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return head;
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}
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void end_money(STU *head)
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{
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STU *p;
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float m,k=0.1;
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int minute,hour;
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int no;
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printf("请输入学号：\n");
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scanf("%d",&no);
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for(p=head;p;p=p->next)
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{
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if(no==p->no)
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{
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if(p->end.minute<p->begin.minute){
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p->begin.hour--;
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minute=p->end.minute+60-p->begin.minute;
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}else{
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minute=p->end.minute-p->begin.minute;
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}
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hour=p->begin.hour-p->end.hour;
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minute=hour*60+minute;
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m=minute*k;
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printf("本次上机时间为%d分钟，消费金额为%f元(注：上机0.1元/分钟)\n",minute,m);
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}
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}
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}
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void select_no(STU *head)
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{
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STU *p;
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int no;
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printf("请输入学号：\n");
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scanf("%d",&no);
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for(p=head;p->next;p=p->next)
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{
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if(no==p->no)
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printf("学号：%d班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
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}
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}
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void select_classno(STU *head)
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{
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STU *p;
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char classno[20];
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printf("请输入班级:\n");
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scanf("%s",&classno);
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for(p=head;p;p=p->next)
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{
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if(strcmp(classno,p->classno)==0)
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printf("学号：%s班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
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}
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}
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void select_name(STU *head)
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{
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STU *p;
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char name[20];
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printf("请输入姓名:\n");
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scanf("%s",&name);
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for(p=head;p;p=p->next)
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{
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if(strcmp(name,p->name)==0)
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printf("学号：%d班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
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}
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}
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void change_student(STU *head)
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{
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STU *p;
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int no;
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printf("请输入该学生的学号：\n");
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scanf("%d",&no);
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for(p=head;p;p=p->next)
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{
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if(no==p->no)
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{
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printf("请输入修改后的上机时间、下机时间：\n");
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scanf("%d%d%d%d",&p->begin.hour,&p->begin.minute,&p->end.hour,&p->end.minute);
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printf("%d%d%d%d",p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
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printf("修改成功！");
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}
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}
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}
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void show_all(STU *head)
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{
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STU *p;
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for(p=head;p;p=p->next){
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printf("学号：%d班级：%s姓名：%s上机时间：%d:%d下机时间：%d:%d\n",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
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}
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}
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void add_student(STU *head)
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{
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STU *p,*q;
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int no,begin_hour,begin_minute,end_hour,end_minute;
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char classno[20],name[20];
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scanf("%d%s%s%d%d%d%d",&no,&classno,&name,&begin_hour,&begin_minute,&end_hour,&end_hour);
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for(p=head;p;p=p->next)
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{
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if(p->next->next==NULL)
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{
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p->no=no;
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strcpy(p->classno,classno);
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strcpy(p->name,name);
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p->begin.hour=begin_hour;
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p->begin.minute=begin_minute;
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p->end.hour=end_hour;
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p->end.minute=end_hour;
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}
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}
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}
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void delect_student(STU *head)
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{
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STU *p;
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int no;
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printf("请输入学号\n");
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scanf("%d",&no);
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for(p=head;p;p=p->next)
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{
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if(p->next->no==no){
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p=p->next;
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}
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}
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}
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void student_file(STU *head)
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{
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STU *p;
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int i;
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p=head->next;
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pf=fopen("student.txt","w+");
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if(pf!=NULL)
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{
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while(p)
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{
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fprintf(pf,"%d%s%s%d%d%d%d",p->no,p->classno,p->name,p->begin.hour,p->begin.minute,p->end.hour,p->end.minute);
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p=p->next;
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}
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}
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fprintf(pf,"\n");
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fclose(pf);
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}
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STU *studebt_open()
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{
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char classno[20],name[20];
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int no,begin_hour,begin_minute,end_hour,end_minute;
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STU *head,*p,*q;
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pf=fopen("student.txt","r");
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head=p=(STU*)malloc(sizeof(STU));
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while(fscanf(pf,"%d%s%s%d%d%d%d",&no,&classno,&name,&begin_hour,&begin_minute,&end_hour,&end_minute)!=EOF)
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{
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q=(STU*)malloc(sizeof(STU));
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q->no=no;
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strcpy(q->classno,classno);
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strcpy(q->name,name);
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q->begin.hour=begin_hour;
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q->begin.minute=begin_minute;
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q->end.hour=end_hour;
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q->end.minute=end_minute;
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p->next=q;
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p=q;
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}
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fclose(pf);
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return head;
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}
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