Solved Homework: Question: Construct a code in c++ with a base class called Student and a derived class called Grad Student….

The solution for the above question is given below with the screenshot of output.
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I have kept the logic simple and output as per the question.

If there is anything else do let me know in comments

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————————– CODE TO COPY ——————————————

#include <iostream>

using namespace std;

// base class
class Student {
  public:
    int calculateaverage() {  // calculate average
      average = sum/number;
      return average;
    }

  protected:
    int average;
    int sum;
    int number;

};

// derived class
class Grad_Student: public Student {
  public:
    int total;
    int num;

    void numberoftestscore() { // calculate number of test and score

      cout << "Enter number of test : ";
      cin >> number;

      num = number;

      while(num) {
        cout << "Enter test score : ";
        cin >> total;
        sum = sum + total;
        total = 0;
        num--;
      }
    }

    char gradetest() {  // return grade score
      if((average <= 100) && (average >= 91)) {
        return 'A';
      }
      if((average <= 90) && (average >= 81)) {
        return 'B';
      }
      if((average <= 80) && (average >= 71)) {
        return 'C';
      }
      if((average <= 70) && (average >= 61)) {
        return 'D';
      }
      if((average <= 60) && (average >= 51)) {
        return 'E';
      }

      return 'F';
    }
};

int main() {
  
  Grad_Student gradstudent;
  gradstudent.numberoftestscore();

  int average = gradstudent.calculateaverage();
  cout << "Avgerage : " << average << endl;
  
  char score = gradstudent.gradetest();
  cout << "Grade Score : " << score << endl;

}

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