Khang code

30dayscodeP12.cpp

#include <iostream>
#include <vector>

using namespace std;


class Person{
	protected:
		string firstName;
		string lastName;
		int id;
	public:
		Person(string firstName, string lastName, int identification){
			this->firstName = firstName;
			this->lastName = lastName;
			this->id = identification;
		}
		void printPerson(){
			cout<< "Name: "<< lastName << ", "<< firstName <<"\nID: "<< id << "\n"; 
		}
	
};

class Student :  public Person{
	private:
		vector<int> testScores;  
	public:
       Student(string firstName, string lastName, int identification,vector<int>scores) : Person(firstName, lastName,identification),testScores(scores){}
       char calculate(){
           int trungbinh=0;
           for(int i=0;i<testScores.size();i++){
               trungbinh =trungbinh + testScores[i];
           }
           trungbinh=trungbinh/testScores.size();
           if(trungbinh>=90){return 'O';}
           else if(trungbinh>=80){return   'E';}
           else if(trungbinh>=70){return   'A';}
           else if(trungbinh>=60){return   'P';}
           else if(trungbinh>=50){return   'D';}
           else if(trungbinh>=40){return   'T';}
       }
       
};

int main() {
	string firstName;
  	string lastName;
	int id;
  	int numScores;
	cin >> firstName >> lastName >> id >> numScores;
  	vector<int> scores;
  	for(int i = 0; i < numScores; i++){
	  	int tmpScore;
	  	cin >> tmpScore;
		scores.push_back(tmpScore);
	}
	Student* s = new Student(firstName, lastName, id, scores);
	s->printPerson();
	cout << "Grade: " << s->calculate() << "\n";
	return 0;
}