diff --git a/C.py b/C.py
new file mode 100644
index 0000000..0b77f20
--- /dev/null
+++ b/C.py
@@ -0,0 +1,237 @@
+import tkinter as tk
+import tkinter.messagebox
+import pymysql
+from tkinter import ttk
+
+
+def HR_in():
+    global win
+    win = tk.Tk()
+    win.title('HR登陆页面')
+    win.geometry('600x300')
+    tk.Label(win).place(x=0, y=300)
+    tk.Label(win, text='你好,HR!', font=30, bg='green').place(x=250, y=15)
+    tk.Label(win, text='账号 :', font=10).place(x=130, y=60)
+    tk.Label(win, text='密码 :', font=10).place(x=130, y=100)
+    hr_id = tk.Entry(win, width=20, font=10)
+    hr_id.place(x=230, y=60)
+    hr_pwd = tk.Entry(win, width=20, font=10, show='*')
+    hr_pwd.place(x=230, y=100)
+
+    def main1():
+        get_hrid = hr_id.get()
+        get_hrpwd = hr_pwd.get()
+        sql = "select HRID,password from hraccount where HRID= %s and password = %s"
+        conn = pymysql.connect(host="127.0.0.1", user="root", password="hkx626129", database="world", charset="utf8")
+        cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
+        rows = cursor.execute(sql, (get_hrid, get_hrpwd))
+
+        if get_hrid == '' or get_hrpwd == '':
+            tk.messagebox.showerror('Error', message='用户名或者密码为空')
+        else:
+            if rows != 0:
+                hr_manage_job()
+            else:
+                tk.messagebox.showerror('Error', message='HR用户名或者密码错误')
+
+    tk.Button(win, text='登陆职位系统', width=28, command=main1).place(x=230, y=160)
+
+    win.mainloop()
+
+
+# hr职位管理界面
+def hr_manage_job():
+    win_seeJob = tk.Toplevel()  # 不能二次用tk.Tk(),否则下面的style变不了
+    win_seeJob.title('职位管理')
+    win_seeJob.geometry('1600x1000')
+    tk.Label(win_seeJob, text='职位编号').place(x=45, y=20)
+    tk.Label(win_seeJob, text='职位名称').place(x=45, y=55)
+
+    # treeview行高，供22行Treeview组件使用
+    s = ttk.Style()
+    s.configure('MyStyle.Treeview', rowheight=200)
+
+    # 表格，供22行Treeview组件使用
+    frame1 = tk.Frame(win_seeJob)
+    frame1.place(x=10, y=100, width=1500, height=700)
+
+    # 滚动条，供22行Treeview组件使用
+    scrollBar = tk.Scrollbar(frame1)
+    scrollBar.pack(side=tkinter.RIGHT, fill=tk.Y)
+
+    columns = (
+    'Jno', 'Jname', 'Jclass', 'Jaddress', 'Jsalaryin1month(k)', 'Salarynoin1Year', 'HighestEdu', 'Recruitingno',
+    'Deadline', 'Jdescription')
+    treeview = ttk.Treeview(frame1, height=20, show='headings', columns=columns, yscrollcommand=scrollBar.set,
+                            style='MyStyle.Treeview')
+
+    # 设置表的宽度
+    treeview.column('Jno', width=80, anchor='center')
+    treeview.column('Jname', width=230, anchor='center')
+    treeview.column('Jclass', width=100, anchor='center')
+    treeview.column('Jaddress', width=100, anchor='center')
+    treeview.column('Jsalaryin1month(k)', width=70, anchor='center')
+    treeview.column('Salarynoin1Year', width=70, anchor='center')
+    treeview.column('HighestEdu', width=70, anchor='center')
+    treeview.column('Recruitingno', width=70, anchor='center')
+    treeview.column('Deadline', width=75, anchor='center')
+    treeview.column('Jdescription', width=600, anchor='center')
+
+    # 显示表头
+    treeview.heading('Jno', text='职位编号')
+    treeview.heading('Jname', text='职位名称')
+    treeview.heading('Jclass', text='职位类别')
+    treeview.heading('Jaddress', text='工作地点')
+    treeview.heading('Jsalaryin1month(k)', text='月薪（K）')
+    treeview.heading('Salarynoin1Year', text='一年几薪')
+    treeview.heading('HighestEdu', text='最高学历')
+    treeview.heading('Recruitingno', text='招聘人数')
+    treeview.heading('Deadline', text='截至日期')
+    treeview.heading('Jdescription', text='工作描述')
+    treeview.pack(side=tk.LEFT, fill=tk.Y)
+    scrollBar.config(command=treeview.yview)
+
+    def sql_conn(sql):
+        conn = pymysql.connect(host="127.0.0.1", user="root", password="hkx626129", database="world", charset="utf8")
+        cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
+        cursor.execute(sql)
+        ret = cursor.fetchall()
+        cursor.close()
+        conn.commit()
+        conn.close()
+        return ret
+
+    def delete_tab(treeview):
+        items = treeview.get_children()
+        [treeview.delete(item) for item in items]
+
+    def Jname_select():
+        delete_tab(treeview)
+        sql = "select * from job where Jname like '%" + e2.get() + "%' "
+        list_job = sql_conn(sql)
+        for i in range(len(list_job)):
+            treeview.insert('', i, values=(
+            list_job[i]['Jno'], list_job[i]['Jname'], list_job[i]['Jclass'], list_job[i]['Jaddress'],
+            list_job[i]['Jsalaryin1month(k)'], list_job[i]['Salarynoin1Year'], list_job[i]['HighestEdu'],
+            list_job[i]['Recruitingno'], list_job[i]['Deadline'], list_job[i]['Jdescription']))
+
+    def Jno_select():
+        delete_tab(treeview)
+        sql = "select * from job where Jno = '" + e1.get() + "' "
+        list_job = sql_conn(sql)
+        for i in range(len(list_job)):
+            treeview.insert('', i, values=(
+            list_job[i]['Jno'], list_job[i]['Jname'], list_job[i]['Jclass'], list_job[i]['Jaddress'],
+            list_job[i]['Jsalaryin1month(k)'], list_job[i]['Salarynoin1Year'], list_job[i]['HighestEdu'],
+            list_job[i]['Recruitingno'], list_job[i]['Deadline'], list_job[i]['Jdescription']))
+
+    def all_job():
+        delete_tab(treeview)
+        sql = 'select * from job'
+        list_job = sql_conn(sql)
+        for i in range(len(list_job)):
+            treeview.insert('', i, values=(
+            list_job[i]['Jno'], list_job[i]['Jname'], list_job[i]['Jclass'], list_job[i]['Jaddress'],
+            list_job[i]['Jsalaryin1month(k)'], list_job[i]['Salarynoin1Year'], list_job[i]['HighestEdu'],
+            list_job[i]['Recruitingno'], list_job[i]['Deadline'], list_job[i]['Jdescription']))
+
+    e1 = tk.Entry(win_seeJob, )
+    e1.place(x=100, y=20)
+    e2 = tk.Entry(win_seeJob, )
+    e2.place(x=100, y=55)
+    tk.Button(win_seeJob, text='根据职位编号搜索', width=15, height=1, command=Jno_select).place(x=280, y=20)
+    tk.Button(win_seeJob, text='根据职位名搜索', width=15, height=1, command=Jname_select).place(x=280, y=55)
+    tk.Button(win_seeJob, text='显示所有', width=15, height=1, command=all_job).place(x=450, y=55)
+    tk.Button(win_seeJob, text='职位变更管理', width=15, height=1, bg='green', command=manage_job).place(x=620, y=55)
+
+    win_seeJob.mainloop()
+
+
+# 职位变更管理
+def manage_job():
+    win_addResume = tk.Tk()
+    win_addResume.title('职位变更管理')
+    win_addResume.geometry('1200x800')
+    tk.Label(win_addResume, text='职位变更管理', font=60).place(x=10, y=10)
+
+    tk.Label(win_addResume, text='职位编号').place(x=220, y=70)
+    tk.Label(win_addResume, text='职位名称', ).place(x=220, y=130)
+    tk.Label(win_addResume, text='职位类别', ).place(x=220, y=190)
+    tk.Label(win_addResume, text='工作地点', ).place(x=220, y=250)
+    tk.Label(win_addResume, text='月薪(千)').place(x=220, y=310)
+    tk.Label(win_addResume, text='一年几薪', ).place(x=220, y=370)
+    tk.Label(win_addResume, text='工作描述', ).place(x=220, y=430)
+    tk.Label(win_addResume, text='最高学历', ).place(x=220, y=500)
+    tk.Label(win_addResume, text='招聘人数', ).place(x=220, y=570)
+    tk.Label(win_addResume, text='截止日期', ).place(x=220, y=630)
+    tk.Label(win_addResume, text='对于工作描述内容，可提前编辑好复制粘贴!', font=30, ).place(x=500, y=600)
+
+    e1 = tk.Entry(win_addResume)
+    e1.place(x=300, y=70)
+    e2 = tk.Entry(win_addResume)
+    e2.place(x=300, y=130)
+    e3 = tk.Entry(win_addResume)
+    e3.place(x=300, y=190)
+    e4 = tk.Entry(win_addResume)
+    e4.place(x=300, y=250)
+    e5 = tk.Entry(win_addResume)
+    e5.place(x=300, y=310)
+    e6 = tk.Entry(win_addResume)
+    e6.place(x=300, y=370)
+    e7 = tk.Entry(win_addResume)
+    e7.place(x=300, y=430)
+    e8 = tk.Entry(win_addResume)
+    e8.place(x=300, y=500)
+    e9 = tk.Entry(win_addResume)
+    e9.place(x=300, y=565)
+    e10 = tk.Entry(win_addResume)
+    e10.place(x=300, y=625)
+
+    def sql_conn(sql):
+        conn = pymysql.connect(host="127.0.0.1", user="root", password="hkx626129", database="world", charset="utf8")
+        cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
+        cursor.execute(sql)
+        ret = cursor.fetchall()
+        cursor.close()
+        conn.commit()
+        conn.close()
+        return ret
+
+    # 修改职位功能
+    def alter():
+        if e1.get() == '' or e9.get() == '' or e10.get() == '':
+            tk.messagebox.showerror('警告', '请填写完整职位编号、招聘人数、截止日期！')
+        else:
+            sql = "update Job set Recruitingno = '" + e9.get() + "',Deadline = '" + e10.get() + "' where  Jno='" + e1.get() + "';"
+            ret = sql_conn(sql)
+            tk.messagebox.showinfo('', '修改成功!')
+
+    # 删除职位功能
+    def delete():
+        sql = "delete from Job where Jno='" + e1.get() + "';"
+        ret = sql_conn(sql)
+        tk.messagebox.showinfo('', '删除成功!')
+
+    # 插入（增加职位）功能
+    def insert():
+        if e1.get() == '' or e2.get() == '' or e3.get() == '' or e4.get() == '' or e5.get() == '' or e6.get() == '' or e7.get() == '' or e8.get() == '' or e9.get() == '' or e10.get() == '':
+            tk.messagebox.showerror('警告', '请填写完整！')
+        else:
+            try:
+                sql = "insert into Job values ('" + e1.get() + "','" + e2.get() + "','" + e3.get() + "','" + e4.get() + "','" + e5.get() + "','" + e6.get() + "','" + e7.get() + "','" + e8.get() + "','" + e9.get() + "','" + e10.get() + "')"
+                ret = sql_conn(sql)
+                tk.messagebox.showinfo('', '增加成功!')
+            except:
+                tk.messagebox.showerror('警告', '职位号已存在！')
+
+    tk.Button(win_addResume, text='增加职位', width=30, font=('KaiTi', 20), height=3, bg='green', command=insert).place(
+        x=600, y=100)
+    tk.Button(win_addResume, text='输入职位编号，删除职位', width=30, font=('KaiTi', 20), height=3,
+              command=delete).place(x=600, y=220)
+    tk.Button(win_addResume, text='修改招聘人数和截止日期', width=30, font=('KaiTi', 20), height=3,
+              command=alter).place(x=600, y=340)
+    win_addResume.mainloop()
+
+
+# 调用
+HR_in()
\ No newline at end of file