Use C++ ### Problem OverviewThis exercise involves designing a class hierarchy to manage student data for both high school and middle school students. The task includes defining a base class, `Student`, and its child classes, `HS_Student` and `MS_Student`. Each student class will store relevant information and perform specific calculations based on the data.#### Class Definitions- **Student Class**: This is the base class. - **HS_Student Class**: - **Attributes**: - `name`: string - `grade`: integer - `activity`: string- **MS_Student Class**: - **Attributes**: - `name`: string - `grade`: integer - `mathScore`: integer - `scienceScore`: integer#### Tasks1. **Dynamic Arrays**: Create two dynamic arrays: - One for `HS_Student` - Another for `MS_Student`2. **Output Requirements**: - For `MS_Student`: Calculate and display the average of math and science scores for each grade level. - For `HS_Student`: Report the number of students participating in the same activity within each grade.### Sample Data and Calculations#### Data: - **MS.txt** contains students' names, grades, and their math and science scores. Example Entries: ``` Paul 6 80 90 Oliver 7 82 79 Eugene 8 70 80 ```- **HS.txt** contains students' names, grades, and their activities. Example Entries: ``` Alice 10 swimming Paul 11 band Cindy 10 soccer ```#### Output:- **High School Students by Grade and Activity**: - Grade 9: - Swimming: 1 - Band: 3 - Polo: 1 - Wrestling: 1 - Soccer: 1 - Grade 10: - Swimming: 2 - Band: 1 - Polo: 1 - Soccer: 3 - Grade 11: - Band: 4 - Soccer: 1 - Grade 12: - Polo: 1- **Middle School Students' Average Scores by Grade**: -

Step 1: Declare class Student with members name and grade. Step 2: Declare class HS_Student with member activity that inherits Student. Step 3: Declare class MS_Student with member mathScore and scienceScore that inherits Student. Step 4: In the main() method, allocate space to store HS_Student and MS_Student objects dynamically. Step 5: Read from file and store the contents onto hsobj and msobj. Step 6: Declare four 2D arrays to store the games and count of number of students of that grade have played that game. Step 7: Iterate through objects and update the entries of 2D array and display the array. Step 8: Store the sum of math scores and science scores for each grade. Divide sum by count to find average. Display the average of math and science scores obtained for various grades.#include <iostream>#include <string>#include <fstream>#include <cstdlib>#include <sstream>#include <iomanip>using namespace std; class Student{ public: string name; int grade; Student(string nm,int g) { name=nm; grade=g; }};class HS_Student: public Student{ public: string activity; HS_Student(string nm,int g,string act):Student(nm,g) { activity = act; }};class MS_Student: public Student{ public: int mathScore; int scienceScore; MS_Student(string nm,int g,int mscore, int sscore):Student(nm,g) { mathScore=mscore; scienceScore=sscore; } };int main(){ int hcount=20, mcount=14; MS_Student **msobj; HS_Student **hsobj; string name; int grade; string activity; int mscore,sscore; // dynamically allocate space msobj=(MS_Student**)malloc(mcount*sizeof(MS_Student*)); hsobj=(HS_Student**)malloc(hcount*sizeof(HS_Student*)); // read from file and create objects ifstream fileObj; fileObj.open("MS.txt"); string line; int i=0; while(getline(fileObj,line)) { istringstream linestream(line); linestream>>name>>grade>>mscore>>sscore; msobj[i] = new MS_Student(name,grade,mscore,sscore); i++; } fileObj.close(); fileObj.open("HS.txt"); i=0; while(getline(fileObj,line)) { istringstream linestream(line); linestream>>name>>grade>>activity; hsobj[i] = new HS_Student(name,grade,activity); i++; } fileObj.close(); string grade6games[10][2]; int grade6cnt=0; for(int j=0;j<10;j++) { grade6games[j][0]=""; grade6games[j][1]="0"; } string grade7games[10][2]; int grade7cnt=0; for(int j=0;j<10;j++) { grade7games[j][0]=""; grade7games[j][1]="0"; } string grade8games[10][2]; int grade8cnt=0; for(int j=0;j<10;j++) { grade8games[j][0]=""; grade8games[j][1]="0"; } string grade9games[10][2]; int grade9cnt=0; for(int j=0;j<10;j++) { grade9games[j][0]=""; grade9games[j][1]="0"; } // determine count gradewise and gamewise for(int j=0;j<hcount;j++) { int k; if(hsobj[j]->grade==9) { bool flag=false; for(k=0;k<grade6cnt;k++) { if(hsobj[j]->activity == grade6games[k][0]) { flag=true; break; } } if(flag==true) grade6games[k][1] = to_string(stoi(grade6games[k][1])+1); if(flag==false) { grade6games[grade6cnt][0] = hsobj[j]->activity; grade6games[grade6cnt][1] = "1"; grade6cnt++; } } if(hsobj[j]->grade==10) { bool flag=false; for(k=0;k<grade7cnt;k++) { if(hsobj[j]->activity == grade7games[k][0]) { flag=true; break; } } if(flag==true) grade7games[k][1] = to_string(stoi(grade7games[k][1])+1); if(flag==false) { grade7games[grade7cnt][0] = hsobj[j]->activity; grade7games[grade7cnt][1] = "1"; grade7cnt++; } } if(hsobj[j]->grade==11) { bool flag=false; for(k=0;k<grade8cnt;k++) { if(hsobj[j]->activity == grade8games[k][0]) { flag=true; break; } } if(flag==true) grade8games[k][1] = to_string(stoi(grade8games[k][1])+1); if(flag==false) { grade8games[grade8cnt][0] = hsobj[j]->activity; grade8games[grade8cnt][1] = "1"; grade8cnt++; } } if(hsobj[j]->grade==12) { bool flag=false; for(k=0;k<grade9cnt;k++) { if(hsobj[j]->activity == grade9games[k][0]) { flag=true; break; } } if(flag==true) grade9games[k][1] = to_string(stoi(grade9games[k][1])+1); if(flag==false) { grade9games[grade9cnt][0] = hsobj[j]->activity; grade9games[grade9cnt][1] = "1"; grade9cnt++; } } } cout<<"\nHigh school students"; cout<<"\n_____________________"; cout<<"\nGrade 9"; for(int j=0;j<grade6cnt;j++) { cout<<"\n\t"<<grade6games[j][0]<<"\t"<<": "<<grade6games[j][1]; } cout<<"\n\nGrade 10"; for(int j=0;j<grade7cnt;j++) { cout<<"\n\t"<<grade7games[j][0]<<"\t"<<": "<<grade7games[j][1]; } cout<<"\n\nGrade 11"; for(int j=0;j<grade8cnt;j++) { cout<<"\n\t"<<grade8games[j][0]<<"\t"<<": "<<grade8games[j][1]; } cout<<"\n\nGrade 12"; for(int j=0;j<grade9cnt;j++) { cout<<"\n\t"<<grade9games[j][0]<<"\t"<<": "<<grade9games[j][1]; } // computing average of marks gradewise double avgm6=0.0,avgm7=0.0,avgm8=0.0; int summ6=0,summ7=0,summ8=0; int cntm6=0,cntm7=0,cntm8=0; double avgs6=0.0,avgs7=0.0,avgs8=0.0; int sums6=0,sums7=0,sums8=0; int cnts6=0,cnts7=0,cnts8=0; for(int j=0;j<mcount;j++) { if(msobj[j]->grade==6) { summ6 = summ6+msobj[j]->mathScore; cntm6 = cntm6+1; sums6 = sums6+msobj[j]->scienceScore; cnts6 = cnts6+1; } else if(msobj[j]->grade==7) { summ7 = summ7+msobj[j]->mathScore; cntm7 = cntm7+1; sums7 = sums7+msobj[j]->scienceScore; cnts7 = cnts7+1; } else { summ8= summ8+msobj[j]->mathScore; cntm8 = cntm8+1; sums8 = sums8+msobj[j]->scienceScore; cnts8 = cnts8+1; } } avgm6 =(double)summ6/(double)cntm6; avgs6 =(double)sums6/(double)cnts6; avgm7 =(double)summ7/(double)cntm7; avgs7 =(double)sums7/(double)cnts7; avgm8 =(double)summ8/(double)cntm8; avgs8 =(double)sums8/(double)cnts8; cout<<"\n\n\nMiddle School Students"; cout<<"\n______________________"; cout<<"\n"<<"6th grade : "<<setprecision(2)<<fixed<<(double)(avgm6)<<" "<<(double)(avgs6); cout<<"\n"<<"7th grade : "<<setprecision(2)<<(double)(avgm7)<<" "<<(double)(avgs7); cout<<"\n"<<"8th grade : "<<setprecision(2)<<(double)(avgm8)<<" "<<(double)(avgs8);}Input files HS.txt MS.txt