#include<stdio.h>
#include<string.h>
#include<stdlib.h>

struct time {
 int hour;
 int minute;
};
 struct Student {
 long int xuehao;
 char banji[10];
 char name[10];
 int time_hour;
 int time_minute;
 struct time begin,end;
} ;
struct Student student[30];
static int i=0,j;
void save();
void insert();
void end_money();
void delete_student();
void select_xuehao();
void select_name();
void select_banji();
void show();
int main() {
 int menu();
 int i;
 for(;;)
 {
  printf("\t\t*******************菜单**************\n");
  printf("\t\t\n");
  printf("\t\t\n");
  printf("\t\t***************机房收费管理系统*******\n");
  printf("\t\t\n");
  printf("\t\t\n");
  printf("\t\t1.###############输入学生信息:########\n");
  printf("\t\t2.#################上机费用:##########\n");
  printf("\t\t3.################删除档案:###########\n");
  printf("\t\t4.################按学号查询:#########\n");
  printf("\t\t5.################按班级查询:#########\n");
  printf("\t\t6.################按姓名查询:#########\n");
  printf("\t\t7.################显示学生信息:#######\n");
  printf("\t\t8.##################退出系统:#########\n");
  printf("\n\n\n\n请在（1-8）之间选择功能:");
  scanf("%d",&i);

  switch(i)
  {
   case 1:
   {
    system("cls");
    insert();
   }
   break;
   case 2:
   {
    system("cls");
    end_money();
   }
   break;
   case 3:
    {
     system("cls");
     delete_student();
    }
              break;
   case 4:
   {
    system("cls");
    select_xuehao();
   }
   break;
   case 5:
   {
    system("cls");
    select_banji();
   }
   break;
   case 6:
   {
    system("cls");
    select_name();
   }
   break;
   case 7:
     {
   system("cls");
   show();
   } break;
   case 8:
   {
    exit(0);
   }
           break;
  }
 }
 printf("\n");  system("pause");
     
     save();
 return 0;

}
void insert() {
 printf("请输入学号:");
 scanf("%ld",&student[i].xuehao);
 
 printf("请输入姓名:");
 scanf("%s",student[i].name);
 
 printf("请输入班级:");
 scanf("%s",student[i].banji);
 
 printf("请输入上机时间:");
 scanf("%d:%d",&student[i].begin.hour,&student[i].begin.minute);
 i = i + 1;
 printf("人数：%d",i);
       j=i;
       save();
 printf("\n");  system("pause");
 system("cls");
}
void end_money() {
 int m,minute,hour;
 long int xuehao;
 printf("请输入学号:");
 scanf("%ld",&xuehao);
 for(m = 0; m < i; m++)
 {
   if(student[m].xuehao==xuehao)
  {
   printf("请输入%ld的下机时间:",xuehao);
   scanf("%d:%d",&student[m].end.hour,&student[m].end.minute);
   if(student[m].end.minute<student[m].begin.minute)
   {
    minute=student[m].end.minute+60
           -student[m].begin.minute;
    hour=student[m].end.hour-1-student[m].begin.hour;
    student[m].time_hour = hour;
    student[m].time_minute = minute;
   }
   else
   {
    minute=student[m].end.minute -student[m].begin.minute;
    hour=student[m].end.hour -student[m].begin.hour;
    student[m].time_hour = hour;
    student[m].time_minute = minute;

   }
   if(minute > 0)
   {
    hour = hour + 1;
    printf("上机时间为:%d:%d 费用为:%d",student[m].time_hour,student[m].time_minute,hour);
   }
    else {
    printf("上机时间为:%d:%d\n 费用为:%d",student[m].time_hour,student[m].time_minute,hour);
   }
  }
 }
         save();
 printf("\n");  system("pause");
 system("cls");
}
void delete_student()
{
 long int xuehao;
 int m;
 printf("请输入学号:");
 scanf("%ld",&xuehao);
 if(i==1)
{
  if(student[m].xuehao==xuehao)
  printf("没有数据!");
 }
else{
    for(m=0;m<i-1;m++)
  if(student[m].xuehao==xuehao)break;
  for(;m<i;m++)    student[m]=student[m+1];
 }
 save();
  printf("\n");
  system("pause");
  system("cls");
}
void select_xuehao() {
 long int xuehao;
 int m;
 printf("请输入学号:");
 scanf("%ld",&xuehao);
 for(m = 0; m < i; m++)
 {
  if(student[m].xuehao==xuehao)
  {
   printf("学号:%ld\t",student[m].xuehao);
   printf(" 班级:%s\t",student[m].banji);
   printf("姓名:%s\t",student[m].name);
   printf(" 上机开始时间:%d:%d\t",student[m].begin.hour,student[m].begin.minute);
   printf("上机结束时间:%d:%d\t",student[m].end.hour,student[m].end.minute);
   printf("上机时间:%d:%d\n\t",student[m].time_hour,student[m].time_minute);
  }
  else if( m == i)
  {
   printf("没有该生记录:\n");
  }
 }
save();
 printf("\n");  system("pause");
 system("cls");
}
void select_banji() {
 char banji[10];
 int m;
 printf("请输入班级:");
 scanf("%s",banji);
 for(m = 0; m < i; m++)
 {
  if(!strcmp(banji,student[m].banji)) {
   printf("学号是:%ld\t",student[m].xuehao);
   printf("班级是:%s\t",student[m].banji);
   printf("姓名是:%s\t",student[m].name);
   printf("上机开始时间:%d:%d\t",student[m].begin.hour,student[m].begin.minute);
   printf("上机结束时间:%d:%d\t",student[m].end.hour,student[m].end.minute);
   printf("上机时间为:%d:%d\n",student[m].time_hour,student[m].time_minute);
  }
 else if( m == i)
 {
 printf("没有该生记录:\n");
  }
 }save();
 printf("\n");  system("pause");
   system("cls");
}
void select_name()
{char name[10];
int m;
printf("请输入姓名:");
scanf("%s",name);
for(m=0;m<i;m++)
{
 if(!strcmp(name,student[m].name))
 {
  printf("学号为%ld\t",student[m].xuehao);
   printf("班级为%s\t",student[m].banji);
    printf("姓名为%s\t",student[m].name);
     printf("上机开始时间:%d:%d\t",student[m].begin.hour,student[m].begin.minute);
   printf("上机结束时间:%d:%d\t",student[m].end.hour,student[m].end.minute);
   printf("上机时间为:%d:%d\n",student[m].time_hour,student[m].time_minute);
 }
 else if(m==i)
 {
  printf("没有记录:\n");
 }
}save();
 system("pause");
 system("cls");
}
void save()
{
 FILE *fp;
    int m;
   
fp=fopen("学生机房管理.txt","w");  
 for(m=0;m<i;m++)
   {
   fprintf(fp,"%ld  %s  %s  %d  %d  %d  %d  %d  %d  %d  %d\n",student[m].xuehao,student[m].banji,student[m].name,student[m].begin.hour,student[m].begin.minute,student[m].end.hour,student[m].end.minute,student[m].time_hour,student[m].time_minute);
}
    fclose(fp);                             
}



void show()
{
int m;
printf("学号     班级      姓名      上机时间      下机时间      用时\n");
for(m=0;m<i;m++)
{printf("%ld       %s         %s          %d:%d          %d:%d         %d:%d\n",student[m].xuehao,student[m].banji,student[m].name,student[m].begin.hour,student[m].begin.minute,student[m].end.hour,student[m].end.minute,student[m].time_hour,student[m].time_minute);
}   
system("pause");
system("cls");
 }