testScoreAnalysis..cpp

//*****************************************************************************************************
//      Test Score Analysis
//
//      This program reads a list of test scores from a file, performs various calculations, and
//      displays the scores and calculations.
//
//      Other files required:
//        1.  Assignment1Data.txt - test scores for 10 students on 8 tests
//
//*****************************************************************************************************

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

//*****************************************************************************************************

const int NUM_TESTS = 8;

void readTestScores(ifstream &f, int scores[][NUM_TESTS], int numStds);
void displayTestScores(const int scores[][NUM_TESTS], int numStds);
int totalOneTest(const int scores[][NUM_TESTS], int numStds, int testNumber);
int totalOneStudent(const int scores[][NUM_TESTS], int numStds, int studentNumber);
double averageOneTest(const int scores[][NUM_TESTS], int numStds, int testNumber);
double averageOneStudent(const int scores[][NUM_TESTS], int numStds, int studentNumber);
int highestOneStudent(const int scores[][NUM_TESTS], int numStds, int studentNumber);
int topStudent(const int scores[][NUM_TESTS], int numStds);

//*****************************************************************************************************

int main() {
    const int NUM_STDS = 10;
    int scores[NUM_STDS][NUM_TESTS];
    ifstream f("Assignment1Data.txt");

    readTestScores(f, scores, NUM_STDS);
    f.close();
    displayTestScores(scores, NUM_STDS);

    cout << setprecision(2) << fixed;

    cout << "\nTotal for Test #1 is: " << totalOneTest(scores, NUM_STDS, 0)     // index 0 is test #1
         << "\n\nTotal for Test #5 is: " << totalOneTest(scores, NUM_STDS, 4)
         << "\n\nTotal for Student #3 is: " << totalOneStudent(scores, NUM_STDS, 2)
         << "\n\nTotal for Student #8 is: " << totalOneStudent(scores, NUM_STDS, 7)
         << "\n\nAverage for Test #5: " << averageOneTest(scores, NUM_STDS, 4)
         << "\n\nAverage for Test #8: " << averageOneTest(scores, NUM_STDS, 7)
         << "\n\nAverage for Student #5: " << averageOneStudent(scores, NUM_STDS, 4)
         << "\n\nAverage for Student #9: " << averageOneStudent(scores, NUM_STDS, 8)
         << "\n\nHighest test score for Student #2: " << highestOneStudent(scores, NUM_STDS, 1)
         << "\n\nThe top Student: " << topStudent(scores, NUM_STDS) << endl;

    return 0;
}

//*****************************************************************************************************

void readTestScores(ifstream &f, int scores[][NUM_TESTS], int numStds) {
    if (f.is_open()) {
        for (int studentNumber = 0; studentNumber < numStds; ++studentNumber)
            for (int testNumber = 0; testNumber < NUM_TESTS; ++testNumber)
                f >> scores[studentNumber][testNumber];
    } else {
        cerr << "Error: Unable to open file\n";
    }
}

//*****************************************************************************************************

void displayTestScores(const int scores[][NUM_TESTS], int numStds) {
    cout << "    All Test scores" << endl;

    for (int studentNumber = 0; studentNumber < numStds; ++studentNumber) {
        for (int testNumber = 0; testNumber < NUM_TESTS; ++testNumber)
            cout << scores[studentNumber][testNumber] << " ";
        cout << endl;
    }
}

//*****************************************************************************************************

int totalOneTest(const int scores[][NUM_TESTS], int numStds, int testNumber) {
    int sum = 0;

    for (int studentNumber = 0; studentNumber < numStds; ++studentNumber)
        sum += scores[studentNumber][testNumber];

    return sum;
}

//*****************************************************************************************************

int totalOneStudent(const int scores[][NUM_TESTS], int numStds, int studentNumber) {
    int sum = 0;

    for (int testNumber = 0; testNumber < NUM_TESTS; ++testNumber)
        sum += scores[studentNumber][testNumber];

    return sum;
}

//*****************************************************************************************************

double averageOneTest(const int scores[][NUM_TESTS], int numStds, int testNumber) {
    int total = 0;
    double average;

    for (int studentNumber = 0; studentNumber < numStds; ++studentNumber)
        total += scores[studentNumber][testNumber];

    average = static_cast<double>(total) / numStds;

    return average;
}

//*****************************************************************************************************

double averageOneStudent(const int scores[][NUM_TESTS], int numStds, int studentNumber) {
    int total = 0;
    double average;

    for (int testNumber = 0; testNumber < NUM_TESTS; ++testNumber)
        total += scores[studentNumber][testNumber];

    average = static_cast<double>(total) / NUM_TESTS;

    return average;
}

//*****************************************************************************************************

int highestOneStudent(const int scores[][NUM_TESTS], int numStds, int studentNumber) {
    int highest = scores[studentNumber][0];

    for (int testNumber = 1; testNumber < NUM_TESTS; ++testNumber)
        if (scores[studentNumber][testNumber] > highest)
            highest = scores[studentNumber][testNumber];

    return highest;
}

//*****************************************************************************************************

int topStudent(const int scores[][NUM_TESTS], int numStds) {
    int topPercent = 0,
        topStudent = 0,
        current;

    for (int studentNumber = 0; studentNumber < numStds; ++studentNumber) {
        current = averageOneStudent(scores, numStds, studentNumber);

        if (current > topPercent) {
            topPercent = current;
            topStudent = studentNumber;
        }
    }

    return (topStudent + 1);     // +1 for display purposes
}

//*****************************************************************************************************
/*

    All Test scores
87 90 65 45 88 89 75 80
89 85 78 56 90 91 99 82
80 90 72 95 99 66 77 88
90 65 80 98 99 76 77 88
55 75 66 99 99 56 87 86
30 60 80 90 99 56 67 88
90 55 95 35 98 86 37 88
99 97 99 98 98 96 87 83
90 65 80 98 99 76 87 88
35 75 60 99 99 56 87 88

Total for Test #1 is: 745

Total for Test #5 is: 968

Total for Student #3 is: 667

Total for Student #8 is: 757

Average for Test #5: 96.80

Average for Test #8: 85.90

Average for Student #5: 77.88

Average for Student #9: 85.38

Highest test score for Student #2: 99

The top Student: 8

*/