Question

C++: Create a grade book program that includes a class of up to 20 students each with 5 test grades (4 tests plus a Final). The sample gradebook input file (CSCI1306.txt) is attached. The students’ grades should be kept in an array. Once all students and their test scores are read in, calculate each student’s average (4 tests plus Final counts double) and letter grade for the class.

The output of this program is a tabular grade report that is written to an output file (GradeReport.txt) The report includes each student’s name 5 test grades, test average and final grade as a table, and then print the averages of each Test and overall Test Average, as well as highest Test Grade of all Tests and the student(s) with the highest class grade.

76 89 150 135 200 76 12 100 150 28 178 189 167 200 175 150 87 99 129
149 176 200 87 35 157 189

Andrew  Miller   87.5   89      65.75   37      98.5
John    Doe      86     88      85.25   90      95
John    Smith    52     82      79      88.5    85
Jane    Deer     90     93      91      92.75   94
William Clinton  95     97      95.75   90      92
George  Jones    89     81.5    75      85.25   88
Sarah   White    75.5   78      85      88      84
Bill    Able     88     90      86.75   91      93.5
Larry   Brown    99     95      98      96.5    97
Amanda  Ernst    76     79.5    77      82      84.25
Richard Farmer   84.75  87      80      85      86
Sam     Green    87     91.75   85      88      90
Paula   Hamilton 98     100     97.5    95      98.5
Jesus   Javiar   77.5   82      85      78      86
Christy King     86     89.25   92      90      94.75
Bob     Bush     70     75.5    77      79      81.25
Jerry   Landers  95.5   97      96      92.75   94
Sally   Moore    97     99      98.25   94      99
Nancy   Nadler   91     93.25   90      89      92.5
Tina    Templar  85     82      88.75   84      90

Answer 1

Code:

#include<iostream>

#include<iomanip>

#include<fstream>

#include<stdlib.h>

#include<string.h>

using namespace std;

struct GradeBook {

char FName[100];

char LName[100];

double s1, s2, s3, s4, s5;

double AverageGrades;

char LetterGrade;

};

struct GradeBook gBook[20];

class Students {

public:

    double sumMarks, totalMarks;

double avgTest[5] = {0};

double avg;

double highestMarks;

void ReadFile(ifstream & inFile) {

    inFile.open("grades.txt");

    for (int i = 1; i <= 20; i++) {

      inFile >> gBook[i].FName;

      inFile >> gBook[i].LName;

      inFile >> gBook[i].s1;

      avgTest[0] += gBook[i].s1;

      inFile >> gBook[i].s2;

      avgTest[1] += gBook[i].s2;

      inFile >> gBook[i].s3;

      avgTest[2] += gBook[i].s3;

      inFile >> gBook[i].s4;

      avgTest[3] += gBook[i].s4;

      inFile >> gBook[i].s5;

      avgTest[4] += gBook[i].s5;

    }

    inFile.close();

}

public:

    void printdata() {

      for (int i = 1; i <= 20; i++) {

        cout << setw(15) << left << gBook[i].FName;

        cout << setw(15) << left << gBook[i].LName;

        cout << setw(10) << left << gBook[i].s1;

        cout << setw(10) << left << gBook[i].s2;

        cout << setw(10) << left << gBook[i].s3;

        cout << setw(10) << left << gBook[i].s4;

        cout << setw(10) << left << gBook[i].s5 << endl;

      }

    }

public:

    void FindGrades() {

      avg = 0;

      for(int i = 0; i < 5; i++){

        avgTest[i] /= 20;

        avg += avgTest[i];

      }

      avg /= 5;

      sumMarks = 0, highestMarks = 0;

      for (int i = 1; i <= 20; i++) {

        totalMarks = (gBook[i].s1 + gBook[i].s2 + gBook[i].s3 + gBook[i].s4 + gBook[i].s5);

        gBook[i].AverageGrades = totalMarks / 5;

        if (gBook[i].AverageGrades > 80)

          gBook[i].LetterGrade = 'A';

        else if (gBook[i].AverageGrades > 70 && gBook[i].AverageGrades <= 80)

          gBook[i].LetterGrade = 'B';

        else if (gBook[i].AverageGrades > 60 && gBook[i].AverageGrades < 70)

          gBook[i].LetterGrade = 'C';

        else if (gBook[i].AverageGrades > 50 && gBook[i].AverageGrades < 60)

          gBook[i].LetterGrade = 'D';

        sumMarks = sumMarks + totalMarks;

        if (highestMarks < gBook[i].AverageGrades) {

          highestMarks = gBook[i].AverageGrades;

        }

      }

    }

public:

    void GradesReport(ofstream & outFile) {

      outFile.open("GradeReport.txt");

      outFile << setw(50) << setfill('#') << right << " Grades Report ";

      outFile << setw(37) << right << "" << endl << endl;

      outFile << setfill(' ') << setw(15) << left << "First Name";

      outFile << setw(15) << left << "Last Name";

      outFile << setw(10) << left << "Subject 1";

      outFile << setw(10) << left << "Subject 2";

      outFile << setw(10) << left << "Subject 3";

      outFile << setw(10) << left << "Subject 4";

      outFile << setw(10) << left << "Subject 5";

      outFile << setw(15) << left << "Average Grades";

      outFile << setw(15) << left << "Letter Grade" << endl;

      cout << setw(50) << setfill('#') << right << " Grades Report ";

      cout << setw(37) << right << "" << endl << endl;

      cout << setfill(' ') << setw(15) << left << "First Name";

      cout << setw(15) << left << "Last Name";

      cout << setw(10) << left << "Subject 1";

      cout << setw(10) << left << "Subject 2";

      cout << setw(10) << left << "Subject 3";

      cout << setw(10) << left << "Subject 4";

      cout << setw(10) << left << "Subject 5";

      cout << setw(15) << left << "Average Grades";

      cout << setw(15) << left << "Letter Grade" << endl;

      for (int i = 1; i <= 20; i++) {

        outFile << setw(15) << left << gBook[i].FName;

        outFile << setw(15) << left << gBook[i].LName;

        outFile << setw(10) << left << gBook[i].s1;

        outFile << setw(10) << left << gBook[i].s2;

        outFile << setw(10) << left << gBook[i].s3;

        outFile << setw(10) << left << gBook[i].s4;

        outFile << setw(10) << left << gBook[i].s5;

        outFile << setw(15) << left << gBook[i].AverageGrades;

        outFile << setw(15) << left << gBook[i].LetterGrade << endl;

        cout << setw(15) << left << gBook[i].FName;

        cout << setw(15) << left << gBook[i].LName;

        cout << setw(10) << left << gBook[i].s1;

        cout << setw(10) << left << gBook[i].s2;

        cout << setw(10) << left << gBook[i].s3;

        cout << setw(10) << left << gBook[i].s4;

        cout << setw(10) << left << gBook[i].s5;

        cout << setw(15) << left << gBook[i].AverageGrades;

        cout << setw(15) << left << gBook[i].LetterGrade << endl;

      }

      for(int i = 0; i < 5; i++){

        cout << "\nAverage of Test " << i + 1 << " = " << avgTest[i];

        outFile << "\nAverage of Test " << i + 1 << " = " << avgTest[i];

      }

      cout << "\n\nAverage of All tests = " << avg << endl;

      outFile << "\n\nAverage of All tests = " << avg << endl;

      cout << "\nThe Highest Average Grade is: " << highestMarks << endl;

      outFile << "\nHighest Grade : " << highestMarks << endl;

      cout << "\n GradeReport Saved Successfully to the Outputfile" << endl;

      outFile.close();

    }

};

int main() {

Students students;

cout << "\n------------------------------" << endl;

cout << "\n *** Students Book Records ***" << endl;

cout << "\n------------------------------" << endl;

ifstream inFile;

students.ReadFile(inFile); //reading input file.

cout << "\nThe Data from the input File is:" << endl;

students.printdata();

cout << "\nCalculating Grades..........." << endl;

students.FindGrades();

cout << "\n the Grade Report is " << endl;

cout << "\n------------------------------" << endl;

ofstream outFile;

students.GradesReport(outFile);

return 0;

}

grades.txt:

Output:

Console:

GradesReport.txt