diff --git a/j1.cpp b/j1.cpp
new file mode 100644
index 0000000..a08dfee
--- /dev/null
+++ b/j1.cpp
@@ -0,0 +1,89 @@
+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");
+}
+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");
+}