#include?
#include?
#include?
#include?
#include?
#include
using?namespace?std;

int?renshu=0keshu=0i=0;
double?kesum[6]=?{0}keave[6]=?{0};
int?youxiu[6]=?{0}lianghao[6]=?{0}zhongdeng[6]=?{0}jige[6]=?{0}bujige[6]=?{0};
typedef?struct?student
{
????char?number?[20];
????char?name[20];
????double?score[6];
????double?sum;
????double?ave;
}?STUDENT;
STUDENT?ST[50];
char?date[32];
char?timee[32];

void?welcome（void）??//歡迎界面
{
????cout<<“??????????????Welcome?to?the?student?management?system.“<}
void?Printmenu（void）??//打印菜單
{
????cout<<“//******************************************************************************//“<????cout<<“????????1.Input?record\n“<????cout<<“????????2.Caculate?total?and?average?score?of?every?course“<????cout<<“????????3.Caculate?total?and?average?score?of?every?student“<????cout<<“????????4.Sort?in?descending?order?by?total?score?of?everyday?student“<????cout<<“????????5.Sort?in?ascending?order?by?total?score?of?everyday?student“<????cout<<“????????6.Sort?in?ascending?order?by?nunber“<????cout<<“????????7.Sort?in?ascending?order?by?name“<????cout<<“????????9.Search?by?name“<????cout<<“????????10.Statistic?analysis?for?every?cours“<????cout<<“????????11.List?record\n“;
????cout<<“????????12.Write?to?a?file?“<????cout<<“????????13.Read?from?a?file“<????cout<<“????????0.Exit\n“<????cout<<“????????Please?enter?your?choice:“<????cout<<“//*****************************************************************************//“<}
void?Input（void）
{
????int?nk=3j;
???cout<<“Please?enter?the?number?of?subjects?first.\n“;
????cin>>n;
????keshu=n;
????while?（1）
????{
????????cout<<“Please?enter?the?student‘s?number?name?and?grade?in?turn.\n“;
????????cin>>ST[i].number>>ST[i].name;
????????for（j=0;?j????????{
????????????cin>>ST[i].score[j];
????????????ST[i].sum=ST[i].sum+ST[i].score[j];
????????????if?（ST[i].score[j]>=90）?youxiu[j]++;
????????????else?if?（ST[i].score[j]>=80）?lianghao[j]++;
????????????else?if?（ST[i].score[j]>=70）?zhongdeng[j]++;
????????????else?if?（ST[i].score[j]>=60）??jige[j]++;
????????????else?bujige[j]++;
????????????kesum[j]=kesum[j]+ST[i].score[j];
????????}
????????ST[i].ave=ST[i].sum/n;
????????cout<<“?1.continue?typing\n?0.exit“<????????scanf?（“%d“&k）;
????????if?（k==1）?i++;
????????else?if?（k==0）?break;
????}
????renshu=i+1;
}
void?Caculatestudent（void）?//計算每個學生總分平均分
{
????system（“cls“）;
????int?ij;
????for（i=0;?i????{
????????cout<????????for（j=0;?j????????{
????????????printf（“%7.2f“ST[i].score[j]）;
????????}
????????printf（“%7.2f“ST[i].sum）;
????????printf（“%7.2f\n“ST[i].ave）;
????}
????printf（“Calculate?success\n“）;
}
void??Caculateclass（void）//計算課程總分?平均分
{
????sy

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-07-15?11:59??學生管理系統c++\
?????文件?????????174??2018-07-15?11:57??學生管理系統c++\a.txt
?????目錄???????????0??2018-07-14?22:45??學生管理系統c++\bin\
?????目錄???????????0??2018-07-15?11:56??學生管理系統c++\bin\Debug\
?????文件?????1073942??2018-07-15?11:56??學生管理系統c++\bin\Debug\學生管理系統c++.exe
?????文件???????11073??2018-07-15?11:56??學生管理系統c++\main.cpp
?????目錄???????????0??2018-07-14?22:45??學生管理系統c++\obj\
?????目錄???????????0??2018-07-15?11:56??學生管理系統c++\obj\Debug\
?????文件???????33332??2018-07-15?11:56??學生管理系統c++\obj\Debug\main.o
?????文件????????1113??2018-07-14?22:45??學生管理系統c++\學生管理系統c++.cbp
?????文件?????????169??2018-07-15?11:59??學生管理系統c++\學生管理系統c++.depend
?????文件?????????867??2018-07-15?11:59??學生管理系統c++\學生管理系統c++.layout