#include"stdio.h"
#include"string.h"
#define N 100
#define NULL 0
int n,m=0;//n为记录学生的个数；m为统计函数1中记录符合统计条件的个数
struct kuangke
{//有关旷课统计函数1的信息记录
char name[40];
int kuangke_num;
}kuangke[N];
struct kuangke2
{//有关旷课统计函数2的信息记录
char name[40];
int num;
}kuangke2[N];
struct kuangke temp;//旷课信息交换
struct kuangke2 temp2;//旷课信息交换
struct Student
{//
int num;
char name[40];
char lesson_name[40];
char lesson_time[40];
float time;
int chidao_num;
int zaotui_num;
int qingjia_num;
int kuangke_num;
}stu[N];
void creat(void)                           
{//创建学生缺课记录
int i;
printf("\n请输入需要创建缺课信息的总学生数：\n");
scanf("%d",&n);
printf("\n请输入缺课学生信息 包括：\n");
printf("学号 姓名    课程名称    上课时间 缺课日期 迟到次数 早退次数 请假次数 旷课次数 \n");
printf("例如：\n08  张三丰   C语言课程设计 三、四节 6.10 \t1 \t0 \t0 \t0\n\n");
for(i=0;i<n;i++)
{
printf("\n请输入第%d位同学信息：\n",i+1);
scanf("%d%s%s%s%f%d%d%d%d",&stu[i].num,stu[i].name,stu[i].lesson_name,stu[i].lesson_time,&stu[i].time,&stu[i].chidao_num,&stu[i].zaotui_num,&stu[i].qingjia_num,&stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("第%d位同学信息为：\n\n",i+1);
printf("\t学号\t姓名\t课程名称\n");
printf("\t%d\t%s\t%s\n\n",stu[i].num,stu[i].name,stu[i].lesson_name);
printf("\t上课时间\t缺课日期\n");
printf("\t%s\t%0.2f\n\n",stu[i].lesson_time,stu[i].time);
printf("\t迟到次数  早退次数  请假次数  旷课次数\n");
printf("\t%d\t\t%d\t%d\t\t%d\n\n",stu[i].chidao_num,stu[i].zaotui_num,stu[i].qingjia_num,stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}

}
void xiugai(void)
{//修改学生缺课记录
int i,k,flag=0;
int num;
printf("\n请输入需要修改信息的学号\n");
scanf("%d",&num);
for(i=0;i<n;i++)
{//检测是否有符合的数据；
if(num==stu[i].num)
{   
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("%d号学生的信息为：\n\n",num);
printf("\t学号\t姓名\t课程名称\n");
printf("\t%d\t%s\t%s\n\n",stu[i].num,stu[i].name,stu[i].lesson_name);
printf("\t上课时间\t缺课日期\n");
printf("\t%s\t%0.2f\n\n",stu[i].lesson_time,stu[i].time);
printf("\t迟到次数  早退次数  请假次数  旷课次数\n");
printf("\t%d\t\t%d\t%d\t\t%d\n",stu[i].chidao_num,stu[i].zaotui_num,stu[i].qingjia_num,stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
for(;k!=9;)
{//修改信息菜单
printf("\n请选择需要修改的项目：\n\n");
printf("\t1.学生姓名\t2.课程名称\t3.上课时间\n\n\t4.缺课日期\t5.迟到次数\t6.早退次数\n\n\t7.请假次数\t8.旷课次数\t9.退出\n");
scanf("%d",&k);
if(i<0||i>=50)
break;
printf("\n请输入修改信息：");
switch(k)
{   
case 1:scanf("%s",stu[i].name);break;
case 2:scanf("%s",stu[i].lesson_name);break;
case 3:scanf("%s",stu[i].lesson_time);break;
case 4:scanf("%f",&stu[i].time);break;
case 5:scanf("%d",&stu[i].chidao_num);break;
case 6:scanf("%d",&stu[i].zaotui_num);break;
case 7:scanf("%d",&stu[i].qingjia_num);break;
case 8:scanf("%d",&stu[i].kuangke_num);break;
case 9:break;
default:printf("无该菜单选项，请重新输入\n\n");
}
printf("\n修改后的信息为：\n");
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("%d号学生的信息为：\n\n",num);
printf("\t学号\t姓名\t课程名称\n");
printf("\t%d\t%s\t%s\n\n",stu[i].num,stu[i].name,stu[i].lesson_name);
printf("\t上课时间\t缺课日期\n");
printf("\t%s\t%0.2f\n\n",stu[i].lesson_time,stu[i].time);
printf("\t迟到次数  早退次数  请假次数  旷课次数\n");
printf("\t%d\t\t%d\t%d\t\t%d\n",stu[i].chidao_num,stu[i].zaotui_num,stu[i].qingjia_num,stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
}
else//未检测到信息时记录并提示错误信息；
flag++;
if(flag==n)
printf("\n输入信息有误\n\n");
}
}
void intfac(void)
{//整型类数据查询
int num,i,flag=0;
scanf("%d",&num);
for(i=0;i<n;i++)
{//检测是否有符合的数据
if(num==stu[i].num)
{
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("%d号学生的信息为：\n\n",num);
printf("\t学号\t姓名\t课程名称\n");
printf("\t%d\t%s\t%s\n\n",stu[i].num,stu[i].name,stu[i].lesson_name);
printf("\t上课时间\t缺课日期\n");
printf("\t%s\t%0.2f\n\n",stu[i].lesson_time,stu[i].time);
printf("\t迟到次数  早退次数  请假次数  旷课次数\n");
printf("\t%d\t\t%d\t%d\t\t%d\n",stu[i].chidao_num,stu[i].zaotui_num,stu[i].qingjia_num,stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
else
flag++;
}
if(flag==n)
printf("\n输入信息有误\n\n");
}
void stringfac1(void)
{//字符型数据查询       
int i,flag=0;
char string[40];
scanf("%s",string);
for(i=0;i<n;i++)
{//检测是否有符合的数据
if(strcmp(string,stu[i].name)==0)//字符串比较
{
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("%d号学生的信息为：\n\n",stu[i].num);
printf("\t学号\t姓名\t课程名称\n");
printf("\t%d\t%s\t%s\n\n",stu[i].num,stu[i].name,stu[i].lesson_name);
printf("\t上课时间\t缺课日期\n");
printf("\t%s\t%0.2f\n\n",stu[i].lesson_time,stu[i].time);
printf("\t迟到次数  早退次数  请假次数  旷课次数\n");
printf("\t%d\t\t%d\t%d\t\t%d\n",stu[i].chidao_num,stu[i].zaotui_num,stu[i].qingjia_num,stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
else
flag++;
}
if(flag==n)
printf("\n输入信息有误\n\n");
}
void stringfac2(void)
{//字符型数据查询
int i,flag=0;
char string[40];
scanf("%s",string);
for(i=0;i<n;i++)
{//检测是否有符合的数据
if(strcmp(string,stu[i].lesson_name)==0)
{
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("%d号学生的信息为：\n",stu[i].num);
printf("\t学号\t姓名\t课程名称\n");
printf("\t%d\t%s\t%s\n\n",stu[i].num,stu[i].name,stu[i].lesson_name);
printf("\t上课时间\t缺课日期\n");
printf("\t%s\t%0.2f\n\n",stu[i].lesson_time,stu[i].time);
printf("\t迟到次数  早退次数  请假次数  旷课次数\n");
printf("\t%d\t\t%d\t%d\t\t%d\n",stu[i].chidao_num,stu[i].zaotui_num,stu[i].qingjia_num,stu[i].kuangke_num);
printf("\n++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
else
flag++;
}
if(flag==n)
printf("\n输入信息有误\n\n");
}
void chaxun(void)
{//缺课信息查询
int k;
do
{
printf("\n*******************************************************************\n");
printf("\n请选择查询项目\n\n");
printf("\t1.按学号查询\t2.按姓名查询\n\n\t3.按课程名查询\t4.退出查询菜单\n\n");
printf("\n*******************************************************************\n");
scanf("%d",&k);
switch(k)
{
case 1:printf("\n请输入学生学号：");intfac();break;           //整型数据查询（学号） 
case 2:printf("\n请输入学生姓名：");stringfac1();break;      //数据类型1查询 （姓名 字符串） 
case 3:printf("\n请输入课程名称：");stringfac2();break;     //数据类型2查询 （课程名称  字符串 ） 
case 4:break;
default:printf("无此菜单选项，请重新输入\n\n");
}
}while(k!=4);
}
void tongji1printf(void)
{
int i,j;
printf("\n统计后的结果为：\n\n");
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("\t缺课学生姓名\t旷课次数\n\n");
for(i=0;i<=m;i++)
for(j=i+1;j<=m+1;j++)                                                  //统计1   学生的旷课次数的排序   旷课多--->旷课少 
{
if(kuangke[i].kuangke_num<kuangke[j].kuangke_num)
{
temp=kuangke[i];
kuangke[i]=kuangke[j];
kuangke[j]=temp;
}
}
for(i=0;i<=m;i++)
printf("\t%s\t\t%d\n",kuangke[i].name,kuangke[i].kuangke_num);
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
void tongji2printf(void)                                      //统计2    
{
int i,k,j;
printf("\n请输入课程门数:\n");
scanf("%d",&k);
for(i=0;i<k;i++)
{
printf("\n请输入第%d门课程的名称：\n",i+1);
scanf("%s",kuangke2[i].name);
kuangke2[i].num=0;
printf("\n第%d门课程名称为：%s\n",i+1,kuangke2[i].name);        ///旷的课的课名    
}
for(j=0;j<k;j++)                                   ///k为课程门数 
{//统计符合检测信息的个数
for(i=0;i<=m;i++)                                 // m为计数的变量    在执行这个函数前 已经令 m=k了 
{
if(strcmp(kuangke2[j].name,kuangke[i].name)==0)       //如果输入的课程名称是  有学生旷课的课程 
{
kuangke2[j].num=kuangke2[j].num+kuangke[i].kuangke_num;
}
}
}
for(i=0;i<k;i++)//按从大到小排序
for(j=i+1;j<k+1;j++)
{
if(kuangke2[i].num<kuangke2[j].num)
{
temp2=kuangke2[i];
kuangke2[i]=kuangke2[j];
kuangke2[j]=temp2;
}
}
printf("\n统计后的结果为：\n\n");
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
for(j=0;j<k;j++)
{
printf("\t课程名称\t旷课人次\n\n");
printf("\t%s\t\t%d\n",kuangke2[j].name ,kuangke2[j].num);
}
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
void tongjifac1(void)
{//信息检索
float time1,time2;
int i,flag=0,k;
printf("请输入起始时间和终止时间\n");
scanf("%f%f",&time1,&time2);
for(i=0,k=0;i<n;i++)
{
if(stu[i].time>=time1&&stu[i].time<=time2)
{
if(stu[i].kuangke_num>0)
{
strcpy(kuangke[k].name,stu[i].name);
kuangke[k].kuangke_num=stu[i].kuangke_num;
m=k;
k++;
}
else
flag++;
}
}
if(flag==n)
printf("\n输入信息有误\n\n");
else
tongji1printf();
}
void tongjifac2(void)
{//信息检索
float time1,time2;
int i,flag=0,k;
printf("请输入起始时间和终止时间\n");
scanf("%f%f",&time1,&time2);
for(i=0,k=0;i<n;i++)
{
if(stu[i].time>=time1&&stu[i].time<=time2)
{
if(stu[i].kuangke_num>0)
{
strcpy(kuangke[k].name,stu[i].lesson_name);
kuangke[k].kuangke_num=stu[i].kuangke_num;
m=k;
k++;
}
else
flag++;
}
}
if(flag==n)
printf("\n输入信息有误\n\n");
else
tongji2printf();
}
void tongji(void)
{//统计缺课情况
int k;
do
{
printf("\n*******************************************************************\n");
printf("请选择统计项目\n\n");
printf("\n\t1.统计某段时间内，旷课学生姓名及旷课次数。\n");
printf("\n\t2.统计某段时间内，有学生旷课的课程及旷课人次。\n");
printf("\n\t3.退出统计菜单\n");
printf("\n*******************************************************************\n");
scanf("%d",&k);
switch(k)
{
case 1:tongjifac1();break;
case 2:tongjifac2();break;
case 3:break;
default:printf("\n\n无此菜单选项，请重新选择\n");
}
}while(k!=3);
}
int main(void)
{
struct Student *head;
int n;
printf("\t\t\t欢迎使用学生考勤管理系统\n\n");
printf("\t\t\t请统计好要输入的学生的个数\n\n");
printf("\t\t\t并一次性输入所有的数据\n\n");
printf("\t\t\t注意；本系统只能暂时保存数据\n\n");
printf("\t\t\t所有数据不写入文档，请做好备份\n\n");
do
{
printf("********************************************************************************\n\n");
printf("\t\t\t1.创建学生缺课记录\n\n");
printf("\t\t\t2.修改学生缺课记录\n\n");
printf("\t\t\t3.查询学生缺课记录\n\n");
printf("\t\t\t4.统计学生缺课记录\n\n");
printf("\t\t\t5.退出统一考勤管理系统\n\n");
printf("********************************************************************************\n");
scanf("%d",&n);
switch(n)
{
case 1:creat();break;
case 2:xiugai();break;
case 3:chaxun();break;
case 4:tongji();break;
case 5:break;
default:printf("无该菜单选项，请重新选择。\n\n");
}
}while(n!=5);
}