The following code is a partial program for a grading system. Complete the missi

Question

The following code is a partial program for a grading system. Complete the missing portion of the code to make the program run.

Problem says this is for a class, rather than one student.

Strategy: Attack for a single student, then do for an array of N students.

Grading Program Policies:

Two quizzes, 10 points each

Midterm and final exam, 100 points each

Of grade, final counts 50%, midterm 25%, quizes25%

Letter Grade is assigned:

90 or more A

80 – 89, B

70 – 79, C

60 – 69, D

Less than 60, F

Input: Read student's scores,

Output: scores + numeric average + assigned letter grade

Use a struct to contain student record.

struct StudentRecord

{

int studentID;

double quiz1;

double quiz2;

double midterm;

double final;

double average;

char grade;

};

//prompts for input for one student, sets the

//structure variable members.

void input(StudentRecord& student);

//calculates the numeric average and letter grade.

void computeGrade(StudentRecord& student);

//outputs the student record.

void output(const StudentRecord student);

int main()

{

StudentRecord student[CLASS_SIZE];

for(int i = 0; i < CLASS_SIZE; i++)

    input(student[i]);

    for(int i = 0; i < CLASS_SIZE; i++)

    {

      computeGrade(student[i]);

      output(student[i]);

      cout << endl;

    }

return 0;

}

void input(StudentRecord &student)

{

}

void computeGrade(StudentRecord& student)

{

//final counts 50%, midterm 25%, quizes25%

}

void output(const StudentRecord student)

{

}

Explanation / Answer

#include <bits/stdc++.h>
using namespace std;

#DEFINE CLASS_SIZE 10

struct StudentRecord{
   int studentID;
   double quiz1;
   double quiz2;
   double midterm;
   double final;
   double average;
   char grade;
};

void input(StudentRecord& student){
   cout << "Enter student ID : ";
   cin >> student.studentID;

   cout << "Enter Quiz 1 marks out of 20 : ";
   cin >> student.quiz1;

   cout << "Enter Quiz 2 marks out of 20 : ";
   cin >> student.quiz2;

   cout << "Enter midterm marks out of 100 : ";
   cin >> student.midterm;

   cout << "Enter final exam marks out of 100 : ";
   cin >> student.final;
}

void computeGrade(StudentRecord& student){
   student->average = (2*student->final+student->midterm+student->quiz1+student->quiz2)/4.0;
   if (student->average >= 90.0)
       student->grade ='A';
   else if (student->average >= 80 && student->average < 89)
       student->grade = 'B';
   else if (student->average >= 70 && student->average < 79)
       student->grade = 'C';
   else if (student->average >= 60 && student->average < 69)
       student->grade = 'D';
   else
       student->grade = 'F';
}

void output(const StudentRecord student){
   cout << "Student ID : " << student.studentID << " Quiz1 : " << student.quiz1 << " Quiz2 : " << student.quiz2 << " MidTerm marks : " << student.midterm << " Final Marks : " << student.final << " average : " << student.average << " grades : " << student.grade << endl;
}

int main(){
   StudentRecord student[CLASS_SIZE];
   for(int i = 0; i < CLASS_SIZE; i++)
   input(student[i]);
  
for(int i = 0; i < CLASS_SIZE; i++){
   computeGrade(student[i]);
   output(student[i]);
   cout << endl;
}
   return 0;
}

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