Question

using if/switch statements (C++)

Write a grading program for a class with the following grading policies:

There are two quizzes, each graded on the basis of 10 points

There is one midterm exam and one final exam, each graded on the basis of 100 points

The final exam counts for 50% of the grade, the midterm counts for 25% and the two quizzes together count for a total of 25%. (Do not forget to normalize the quiz scores. They should be converted to a percent before they are averaged in).

Any grade of 90 or more is an A, any grade of 80 or more (but less than 90) is a B, any grade of 70 or more (but less then 80) is a C, any grade of 60 or more (but less than 70) is a D, any grade below 60 is an F.

The program will read in the student’s score (two quiz and two exams) and output the student’s record, which consists of two quiz and two exam scores as well as the student’s average numeric score for the entire course and the final letter grade.

Answer 1

Solution:-

#include <iostream>
using namespace std;

int main()
{
int q1,q2,mt,ft;
  
cout << "Enter Quiz 1 Number(out of 10): ";
cin >> q1;
cout << "Enter Quiz 2 Number(out of 10): ";
cin >> q2;
cout << "Enter Mid-term Number(out of 100): ";
cin >> mt;
cout << "Enter Final-term Number(out of 100): ";
cin >> ft;
cout <<"<---------------------------Your Result------------------------->\n";
   cout << "Quiz -1 :"<<q1 <<"/10 \nQuiz -2 :"<<q2 <<"/10 \nMid-Term :" << mt <<"/100\nFinal-Term :"<<ft <<"/100 "<<endl;
  
   double qa=(q1+q2)/2;
   double avg=(0.5*ft)+(0.25*mt)+(2.5*qa);

cout << "Average Score: " << avg << endl;
    int grade=avg/10;
    switch(grade)
    {
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
            cout << "Grade : F " ;
            break;
            case 6:
                cout << "Grade : D ";
                break;
                case 7:
                cout << "Grade : C ";
                break;
                    case 8:
                cout << "Grade : B ";
                break;
                    case 9:
                        case 10:
                cout << "Grade : A ";
                   
                break;
               
    }
  

return 0;

}

Output:-

C:\Users\user\Desktop\Untitled1.exe Enter Quiz 1 Number(out of 10): 10 Enter Quiz 2 Number(out of 10): 9 Enter Mid-term Number(out of 100): 89 Enter Final-term Number(out of 100): 95 ----------------Your Result-------- Quiz -1 :10/10 Quiz -2 :9/10 Mid-Term :89/100 Final-Term :95/100 Average Score: 92.25 Grade : A ------ ------------ --------- --------- -- Process exited with return value o Press any key to continue ...

Compiler - dev c++