# include & ltiostream & gt
# include & ltvector & gt
# include & lt string & gt
# include & lt map>
# include & lt iterator & gt
# include & ltiomanip & gt
Use namespace std
Class students {
Private:
Bilingual;
Double mathematics;
Double English;
Even number;
Double sumo;
Double avesocos
int place
String name;
Public:
Student(double language value = 0, double mathvalue=0, double englishvalue=0, double numbervalue=0, double sumsocosvalue=0, double avescos = 0, int placevalue=0, string namevalue= "Li Lei");
Double get language(){ returns the language; };
double get math(){ return math； };
double get English(){ return English； };
double get number(){ return number； };
double getsumsocos(){ return sumsocos； };
double get place(){ return place； };
double getavesocos(){ return avesocos； };
string getname(){ return name； };
Void setsumsocos (two digits) {sumsocos = digit};
Void setave (two digits) {avescocos = digit};
void set place(int place value){ place = place value； };
Double sum(){ return language+math+English; };
double average(){ return sum()/3； };
};
student::student(double language value、double mathvalue、double englishvalue、double numbervalue、double sumsocosvalue、double avesocosvalue、 int placevalue、string name value):language value、mathvalue、englishvalue、number(numbervalue)、sumsocos(sumsocosvalue)、avesocos(avesocosvalue)、place(placevalue){
name = namevalue
};
Void searchstudent (vector & lt student & gt* iterator beg, end of vector & lt student & gt* iterator, even number)
{
bool isfind = false
for(size _ t I = 0； I < = number; )
{
If ((* asks). getnumber()！ = number)
{
beg++；
if(beg==end)
{
Break;
}
}
other
{
Cout & lt& lt "The student information you inquired is:"
Cout & lt& lt "Name:"
isfind = true
Break;
}
}
if(isfind==false)
{
Cout & lt& lt "Sorry, I didn't find the student information you needed!" & lt& ltendl
Return;
}
};
Double sumavesoco (vector <: Student & gt* iterator beg, vector & lt student & gt* end of iterator) (
Vector & lt student & gt* iterator begin = beg
Vector & lt Student & gt* Iterator End = End;
While (start! = ended)
{
int sum = 0；
int ave = 0；
sum+=(*begin)。 get English()；
sum+=(*begin)。 get language()；
sum+=(*begin)。 get math()；
ave = sum/3；
(*begin)。 Setsumsocos (sum);
(*begin)。 setave(ave)；
begin++；
}
Vector & lt student & gt* iterator begin1= beg;
Vector & lt student & gt* iterator Ended1= end;
int sumave = 0；
int sum soco = 0；
int count = 0；
while(begin 1！ =ended 1)
{
sumsoco+=(*begin 1)。 getsumsocos()；
count++；
begin 1++；
}
sumave = sumsoco/count；
Cout & lt& lt "The total score and average score of students are:"
And (beg! = End)
{
Cout & lt& lt "Name:"
beg++；
}
Return to sumave
};
Empty position (vector & lt student & gt* iterator beg, end of vector & lt student & gt* iterator) {
Vector & lt student & gta (seeking, end);
Vector & lt student & gt* iterator begin = a.begin ();
for(int I = 0； I & lta.size (); i++)
{
for(int j = I+ 1； j & lta . size()； j++)
{
If (a[i]. getsumsocos()& lt； a[j]。 getsumsocos())
{
Student days;
a student = a[I]；
a[I]= a[j]；
Students;
}
}
}
After the cout & lt& lt ranking is completed, the ranking order according to the total score is as follows
Vector & lt student & gt* iterator begin1= a.begin ();
while(begin 1！ =a.end())
{
cout & lt& ltsetw(5)& lt； & lt "Name:"
begin 1++；
}
};
void search up student(vector & lt； Student & gt* iterator beg, vector & lt Student & gt* Iterator ends, double avescos) (
Cout & lt& lt "The information of students whose total score is higher than the class average is:"
And (beg! = End)
{
If ((* asks). getsumsocos()& gt； =avesocos)
{
Cout & lt& lt "Name:"
}
beg++；
}
};
Structure
int main()
{
Vector & lt student & gtstuarray
loop:cout & lt； & lt“* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *”& lt； & lt endel
& lt& lt" 1. Enter information 2. Calculate the total score and average score of 3. Inquire about student information 4. Ranked 5 according to the total score. The average query score is "< < endel"
& lt& lt“* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *”& lt； & ltendl
int choose = 0；
Cout & lt& lt "Please enter your choice!" & lt& ltendl
CIN . clear()；
CIN . sync()；
CIN & gt； & gt chose;
If (< = 0 || Choose > 5)
{
Cout & lt& lt "Wrong input, please re-enter!" & lt& ltendl
Go to loop;
}
char ch = 0；
int count = 0；
Shuangsumave
Switch (selection)
{
Case 1:
{
Do {
Cout & lt& lt "Please enter student information!" & lt& ltendl
Double orchid, mathematics, English, numbers, socos, avesocos, place.
String name, gender;
Cout < < "language:";
CIN & gt； & gt orchid;
Cout & lt& ltendl & lt& lt Mathematics;
CIN & gt； & gt Mathematics;
Cout & lt& ltendl & lt& lt "English:";
CIN & gt； & gt English;
Cout & lt& ltendl & lt& lt "student number:";
CIN & gt； & gt number;
CIN . sync()；
Cout & lt& ltendl & lt& lt Name: ";
Getline(cin, name);
cout & lt& ltendl
Student * astudent = new student (lan, math, English, numbers, socos=0, AVES SOCOS = 0, place=0, name);
stu array . push _ back(* a student)；
Cout & lt& lt "Do you want to continue typing?" & lt& ltendl
CIN . clear()；
CIN . sync()；
CIN & gt； & gtch；
} while(to lower(ch)= = ' y ')；
cout & lt& ltendl
Go to loop;
}
Case 2:
{
Vector & lt student & gt* iterator beg = stuarray.begin ();
Vector < student > * iterator end = stuarray. end ();
sumave=sumavesoco(beg，end)；
Cout & lt& lt "The average grade of the whole class is:"
Go to loop;
}
Case 3:
{cout & lt& lt "Please enter the student number to query!" & lt& ltendl
int number 2 = 0；
CIN & gt； & gt number 2;
searchstudent(stuarray.begin()、stuarray.end()、number 2)；
Go to loop;
}
Case 4:
{
Vector & lt student & gt* iterator beg = stuarray.begin ();
Vector < student > * iterator end = stuarray. end ();
Place (seeking, end);
Go to loop;
}
Case 5:
{
Vector & lt student & gt* iterator beg = stuarray.begin ();
Vector < student > * iterator end = stuarray. end ();
searchupstudent(beg，end，sumave)；
Go to loop;
}
}
Returns 0;
}