The C++ code I am providing below gives very few of the outputs shown in the picture below. Please I at least 4-5 more outputs, so I wanted someone to add some lines to my code in order to be able to generate at last 9-10 outputs shown in the picture

#include

#include

#include

using namespace std;

class student

{

int idnum;

char name[50];

int physics, chemistry, mathematics, english, comscience;

double per;

char grade;

void calculate();

public:

void getdata();

void showdata() const;

void show_tabular() const;

int getIDNum() const;

};

void student::calculate()

{

per=(physics+chemistry+mathematics+english+comscience)/5.0;

if(per>=90)

grade='A+';

else if(per>=80)

grade='A';

else if(per>=75)

grade='A-';

else if(per>=70)

grade='B+';

else if(per>=65)

grade='B';

else if(per>=60)

grade='B-';

else if(per>=55)

grade='C+';

else if(per>=50)

grade='C';

else

grade='F';

}

void student::getdata()

{

cout

cin>>idnum;

cout

cin.ignore();

cin.getline(name,50);

cout

cin>>physics;

cout

cin>>chemistry;

cout

cin>>mathematics;

cout

cin>>english;

cout

cin>>comscience;

calculate();

}

void student::showdata() const

{

cout

cout

cout

cout

cout

cout

cout

cout

cout

}

void student::show_tabular() const

{

cout

}

int student::getIDNum() const

{

return idnum;

}

void SaveStudent();

void displayAll();

void Searchdisplay(int);

void modifyStudent(int);

void deleteStudent(int);

void DisplayClassResult();

void DisplayResult();

void write_student()

{

student st;

ofstream outFile;

outFile.open("student.dat",ios::binary|ios::app);

st.getdata();

outFile.write(reinterpret_cast (&st), sizeof(student));

outFile.close();

cout

cin.ignore();

cin.get();

}

void display_all()

{

student st;

ifstream inFile;

inFile.open("student.dat",ios::binary);

if(!inFile)

{

cout

cin.ignore();

cin.get();

return;

}

cout

while(inFile.read(reinterpret_cast (&st), sizeof(student)))

{

st.showdata();

cout

}

inFile.close();

cin.ignore();

cin.get();

}

void display_sp(int n)

{

student st;

ifstream inFile;

inFile.open("student.dat",ios::binary);

if(!inFile)

{

cout

cin.ignore();

cin.get();

return;

}

bool flag=false;

while(inFile.read(reinterpret_cast (&st), sizeof(student)))

{

if(st.getIDNum()==n)

{

st.showdata();

flag=true;

}

}

inFile.close();

if(flag==false)

cout

cin.ignore();

cin.get();

}

void modify_student(int n)

{

bool found=false;

student st;

fstream File;

File.open("student.dat",ios::binary|ios::in|ios::out);

if(!File)

{

cout

cin.ignore();

cin.get();

return;

}

while(!File.eof() && found==false)

{

File.read(reinterpret_cast (&st), sizeof(student));

if(st.getIDNum()==n)

{

st.showdata();

cout

st.getdata();

int pos=(-1)*static_cast(sizeof(st));

File.seekp(pos,ios::cur);

File.write(reinterpret_cast (&st), sizeof(student));

cout

found=true;

}

}

File.close();

if(found==false)

cout

cin.ignore();

cin.get();

}

void delete_student(int n)

{

student st;

ifstream inFile;

inFile.open("student.dat",ios::binary);

if(!inFile)

{

cout

cin.ignore();

cin.get();

return;

}

ofstream outFile;

outFile.open("Temp.dat",ios::out);

inFile.seekg(0,ios::beg);

while(inFile.read(reinterpret_cast (&st), sizeof(student)))

{

if(st.getIDNum()!=n)

{

outFile.write(reinterpret_cast (&st), sizeof(student));

}

}

outFile.close();

inFile.close();

remove("student.dat");

rename("Temp.dat","student.dat");

cout

cin.ignore();

cin.get();

}

void class_result()

{

student st;

ifstream inFile;

inFile.open("student.dat",ios::binary);

if(!inFile)

{

cout

cin.ignore();

cin.get();

return;

}

cout

cout

cout

cout

while(inFile.read(reinterpret_cast (&st), sizeof(student)))

{

st.show_tabular();

}

cin.ignore();

cin.get();

inFile.close();

}

int main()

{

char ch;

int num;

cout.setf(ios::fixed|ios::showpoint);

cout

do

{

system("cls");

cout

cout

cout

cout

cout

cout

cout

cout

cout

cout

cin>>ch;

system("cls");

switch(ch)

{

case '1': write_student(); break;

case '2': display_all(); break;

case '3': cout>num;

display_sp(num); break;

case '4': cout>num;

modify_student(num);break;

case '5': cout>num;

delete_student(num);break;

case '6' : class_result(); break;

case '7': exit(0);;

default: cout

}

}while(ch!='7');

return 0;

}

Menu X 'D:\sdw\cpp2020108.StudentMIS\StudentMIS.exe" =======I LOVE C++======== === ======== ************Students MIS************************ $ $ $ 1. Load Data 2. Show All Students $ $ 5 3. Search Student 4. Add Student 5 $ 5. Modify Student 6. Delete Student $ 5 7. Sort by StuNo 8. Sort by Name 5 $ 9. Sort by Gender 10.Sort by Phone $ 5 11.Sort by WeChat 12.Sort by Dormitory $ $ 13.Sort by Score 14.Statistics Data $ $ 15.Clear Data 16. Save Data To File $ $ 17.Show Selected Data 18.Exit 5 ************CopyRight ESENG DEWENS EX HDU************** Please choose