Modify the code so it shows the average of each course and each student in a nic

Question

Modify the code so it shows the average of each course and each student in a nicely formatted table.

#include <string> #include <iostream> #include <iomanip> using namespace std; int main() { string courses[] = {"Math","Science","English"}; string students[] = {"Joe","Jay"}; const int STUDENT_COUNT = sizeof(students) / sizeof(students[0]); const int COURSE_COUNT = sizeof(courses) / sizeof(courses[0]); short grades[COURSE_COUNT][STUDENT_COUNT]; float courseAverage[COURSE_COUNT] = { 0.0 }; for (size_t i = 0; i < COURSE_COUNT; i++){ cout << "Input grades for course: " << courses[i] << endl; for (size_t j = 0; j < STUDENT_COUNT; j++){ cout << " " << students[j] << ": "; cin >> grades[i][j]; } } for (size_t i = 0; i < COURSE_COUNT; i++) { courseAverage[i] = 0.0; for (size_t j = 0; j < STUDENT_COUNT; j++) { courseAverage[i] += grades[i][j]; } courseAverage[i] /= STUDENT_COUNT; } for (size_t i = 0; i < COURSE_COUNT; i++) { for (size_t j = 0; j < STUDENT_COUNT; j++) { cout << setw(6) << grades[i][j]; } cout << endl; } cout << "The Averages are: " << endl; for (size_t i = 0; i < COURSE_COUNT; i++) { cout << setw(15) << courses[i] << setw(8) << setprecision(2) << fixed << courseAverage[i] << endl; } return 0; }

Explanation / Answer

///////   OUTPUT //////////////////

Input grades for course: Math
   Joe: 80
   Jay: 100
Input grades for course: Science
   Joe: 90
   Jay: 90
Input grades for course: English
   Joe: 85
   Jay: 90
                     Math   Science   English   Average
            Joe       80        90        85     85.00
            Jay       100        90        90     93.33
          -----------------------------------------------
     Average    90.00   90.00   87.50    89.17

/////////////////////////////////Modified Program ////////////////////////////////////

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
    string courses[] = {"Math","Science","English"};
    string students[] = {"Joe","Jay"};

    const int STUDENT_COUNT = sizeof(students) / sizeof(students[0]);
    const int COURSE_COUNT = sizeof(courses) / sizeof(courses[0]);

    short grades[COURSE_COUNT][STUDENT_COUNT];
    float studentAverage[STUDENT_COUNT] = { 0.0 };
    float courseAverage[COURSE_COUNT] = { 0.0 };
    float averageSum = 0.0f;

    for (size_t i = 0; i < COURSE_COUNT; i++){
        cout << "Input grades for course: " << courses[i] << endl;
        for (size_t j = 0; j < STUDENT_COUNT; j++){
            cout << " " << students[j] << ": ";
            cin >> grades[i][j];
        }
    }

    for (size_t course = 0; course < COURSE_COUNT; course++) {
        courseAverage[course] = 0.0;
        for (size_t student = 0; student < STUDENT_COUNT; student++) {
            courseAverage[course] += grades[course][student];
        }
        courseAverage[course] /= STUDENT_COUNT;
        averageSum += courseAverage[course];

    }  

    for (size_t student = 0; student < STUDENT_COUNT; student++) {
        studentAverage[student] = 0.0;
        for (size_t course = 0; course < COURSE_COUNT; course++) {
            studentAverage[student] += grades[course][student];
        }
        studentAverage[student] /= COURSE_COUNT;
        averageSum += studentAverage[student];
    }


    cout << setw(15) << ""; //space for name
    for (size_t course = 0; course < COURSE_COUNT; course++) {
        cout << setw(10) << courses[course]; //space for name
    }
    cout << setw(10) << "Average"; //space for name
    cout << endl;

    for (size_t student = 0; student < STUDENT_COUNT; student++) {
        cout << setw(15) << students[student]; //space for name
    for (size_t course = 0; course < COURSE_COUNT; course++) {
            cout << setw(10) << grades[course][student];
        }
        cout << setw(10) << setprecision(2) << fixed << studentAverage[student]; //space for name
        cout << endl;
    }
    cout << setw(10) << "" << "-----------------------------------------------" << endl;

    cout << setw(15) << "Average";
    for (size_t course = 0; course < COURSE_COUNT; course++)
    {
        cout << setw(10) << setprecision(2) << fixed << courseAverage[course];
    }
    cout << setw(10) << setprecision(2) << fixed << averageSum / (COURSE_COUNT+STUDENT_COUNT);

    cout << endl;

    return 0;
}

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