diff --git a/j1.cpp b/j1.cpp
new file mode 100644
index 0000000..3bde072
--- /dev/null
+++ b/j1.cpp
@@ -0,0 +1,41 @@
+void end_money() {
+ int m,minute,hour;
+ char 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");
+}
diff --git a/main.c b/main.c
deleted file mode 100644
index 01f4ee9..0000000
--- a/main.c
+++ /dev/null
@@ -1,91 +0,0 @@
-#include "z.c"
-#include "j1.c"
-#include "z1.c"
-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;
-
-}
-
-
diff --git a/z.c b/z.c
deleted file mode 100644
index 93508a6..0000000
--- a/z.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#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();
-
-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);                             
-}
diff --git a/z1.c b/z1.c
deleted file mode 100644
index 51ec010..0000000
--- a/z1.c
+++ /dev/null
@@ -1,21 +0,0 @@
-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;m++)
-  if(student[m].xuehao==xuehao)break;
-  for(;m<i;m++)    student[m]=student[m+1];
- }
- save();
-  printf("\n");
-  system("pause");
-  system("cls");
-}