Question

The Computer Science Instructor has just completed compiling all the grades for the C++ Programming class. The grades were downloaded into a file titled ‘studentGrades.txt’ (attached). Write a C++ Program that reads this file and calculates the following as described :

1. The final semester numeric and letter grade (using 10 point scale) Calculated as follows:
   1. Labs 1-6 (worth 50% of final grade)
   2. Lab 7 is extra credit (worth 2 % of final grade OR replaces lowest lab grade – Select the option which results in the highest final semester grade.
   3. Quizzes (worth 10% of final grade after dropping the lowest 3 quiz grades)
   4. Midterm Exam (worth 20% of final grade)
   5. Final Exam (worth 20% of final grade)
   6. Survey (worth 1% of final grade)
2. The program must use the arrays and functions provided in the driver program below.

Note : Hand check the final grades to verify your answers.

           Use the following driver to test your functions:

#include<iostream>

#include<fstream>

#include<iostream>

#include<string>

using namespace std;

const int MAX_NUM_STUDENTS = 24;

const int NUM_QUIZZES = 13;

const int NUM_LABS = 7;

// Returns the actual number of students in file.

int read_data(ifstream &input,

       string firstNames[], string lastNames[],

       string studentID[],

       double quizzes[][NUM_QUIZZES],

       double labs[][NUM_LABS],

       double midtermExam[],

       double finalExam[],

       double survey[]);

void analyze_grades(double quizzes[][NUM_QUIZZES],

       double labs[][NUM_LABS],

       double midtermExam[],

       double finalExam[],

       double survey[],

       char FinalSemesterGrades[],

       int &gradeA_cnt, int &gradeBC_cnt, int &gradeDF_cnt,

       double &highestGrade, double &lowestGrade,

       int numberOfStudents);

void display_results(string firstNames[], string lastNames[],

       string studentID[], char FinalSemesterGrades[],

       int gradeA_cnt, int gradeBC_cnt, int gradeDF_cnt,

       double highestGrade, double lowestGrade,

       int numberOfStudents);

int main()

{

       string firstNames[MAX_NUM_STUDENTS];

       string lastNames[MAX_NUM_STUDENTS];

       string studentID[MAX_NUM_STUDENTS];

       double quizzes[MAX_NUM_STUDENTS][NUM_QUIZZES],

              labs[MAX_NUM_STUDENTS][NUM_LABS],

              midtermExam[MAX_NUM_STUDENTS],

              finalExam[MAX_NUM_STUDENTS],

              survey[MAX_NUM_STUDENTS];

       char finalSemesterGrades[MAX_NUM_STUDENTS];

       int numberOfStudents = 0,

              double highestGrade = 0.0, lowestGrade = 0.0;

       int gradeA_cnt = 0, gradeBC_cnt = 0, gradeDF_cnt = 0;

       ifstream inFile;

       inFile.open("studentFinalGrades.txt", ios::in);

       if (!inFile.is_open())

       {

              cout << "Error: Cannot open file...Exiting." << endl;

              system("pause");

              exit(0);

       }

       //1. (30%) Call read_data(..) to read the input file and populate the arrays.

       //2. (50%) Call analyze_grades(..) to derive the final semester

       //student grades,

       //count # of A's, B/C's and D/F's grades in the class,

       //highestGrade - the highest grade in class.

       //lowestGrade - the lowest grade in class.

       //3. (20%) Call display_results(..) to display

       // A. All the student names/IDs with their final semester grades.

       // B. The count of A's, B/C's and D/F's grades in the class

       // C. The highest and lowest final semester grades

       inFile.close();

       system("pause");

       return 0;

}

studentFinalGrades.txt

LastName  FirstName     Student ID      Quiz01  Quiz02  Quiz03  Quiz04  Quiz05  Quiz06  Quiz07  Quiz08  Quiz09  Quiz10  Quiz11  Quiz12  Quiz13  Lab01   Lab02   Lab03   Lab04   Lab05   Lab06   Lab07   MidtermExam     FinalExam       InstructorSurvey
Alfred  Michael         4721            100     96      100     100     95      95      95      100     100     95      0       95      100     90      90      75      88      95      85      0       92              97              100
Ariet   Prajwol         3981            92      100     95      95      0       100     95      100     95      100     100     100     0       95      96      95      90      85      0       0       64              100             100
Arozo   Timothy         4469            100     100     95      95      100     95      95      100     100     100     100     95      100     95      95      95      75      89      92      0       57              100             0
Anderson        Kolby   4611            92      80      100     100     95      100     95      95      100     95      75      100     100     100     95      100     100     100     97      0       97              86              100
Anderson        Hunter  2027            96      100     100     95      100     100     0       100     85      0       90      100     100     90      98      95      76      87      95      0       89              85              100
Banks   Jeffrey         0656            100     68      85      90      95      60      90      85      100     80      100     90      100     90      72      60      45      92      65      70      65              72              100
Caya    Justin          7865            100     96      90      95      95      100     95      100     100     100     100     100     100     50      91      95      93      97      90      98      94              96              100
Dinan   Velina          6847            84      60      75      85      80      90      95      0       100     0       0       100     95      100     0       85      93      85      90      0       94              99              100
Hash    Gordon          8538            100     96      95      90      95      95      95      90      100     95      95      100     100     93      98      65      95      92      75      0       74              99              100
Heib    Yu-Chen         4441            96      100     100     100     90      100     95      0       100     95      90      100     100     95      78      93      92      95      90      0       91              97              100
Inman   Kyuyeon         9585            100     100     95      0       100     95      95      100     100     0       85      100     100     95      96      80      75      90      87      0       87              97              100
Patel   Jason           2231            100     88      90      95      95      100     90      0       95      90      80      95      100     20      0       55      20      77      0       0       76              78              100
Pokharel        Rachel  5574            100     92      95      95      95      100     95      100     100     0       90      100     100     95      98      80      90      89      90      0       75              89              0
Rafique Stefan          7373            100     92      95      95      95      100     95      100     100     0       90      100     100     95      98      80      90      89      90      0       94              96              0
Reaves  Nigel           1943            92      0       0       0       0       0       0       0       0       0       0       0       0       95      45      85      60      0       0       0       63              0               0
Robinson        Brian   2246            100     100     95      95      100     100     100     100     100     100     100     100     100     100     100     100     100     97      100     0       98              98              100
Widdifield      David   2616            96      72      95      95      90      85      95      80      100     100     70      95      100     100     100     85      80      97      100     0       80              98              0

Answer 1

INPUT
#######

Each field in input file are space separated as in screenshot below

studentFinalGrades Notepad File Edit Format View Help LastName FirstName studentID Quízel Quize2 Quize3 Quize4 Quízes Quize6 Quíza7 Quǐze8 Quize9 Quize Quiz11 Quǐ212 Quǐ213 Labal Labe2 Lab03 Lab04 Labes Labes L Alfred Michael 4721 10 96 100 100 95 95 95 100 100 95 0 95 100 90 90 75 88 95 85 0 92 97 180 Ariet Prajwol 3981 92 180 95 95 8 10e 95 10e 95 100 10 10 95 96 95 9e 85 64 100 100

//##################PGM START ###################

#include<iostream>
#include<fstream>
#include<iostream>
#include<string>
#include<sstream>
#include <bits/stdc++.h>

using namespace std;

const int MAX_NUM_STUDENTS = 24;
const int NUM_QUIZZES = 13;
const int NUM_LABS = 7;
// Returns the actual number of students in file.

int read_data(ifstream &input,
       string firstNames[], string lastNames[],
       string studentID[],
       double quizzes[][NUM_QUIZZES],
       double labs[][NUM_LABS],
       double midtermExam[],
       double finalExam[],
       double survey[]);
     
void analyze_grades(double quizzes[][NUM_QUIZZES],
       double labs[][NUM_LABS],
       double midtermExam[],
       double finalExam[],
       double survey[],
       char FinalSemesterGrades[],
       int &gradeA_cnt, int &gradeBC_cnt, int &gradeDF_cnt,
       double &highestGrade, double &lowestGrade,
       int numberOfStudents);

void display_results(string firstNames[], string lastNames[],
       string studentID[], char FinalSemesterGrades[],
       int gradeA_cnt, int gradeBC_cnt, int gradeDF_cnt,
       double highestGrade, double lowestGrade,
       int numberOfStudents);
     
     

int main()
{

       string firstNames[MAX_NUM_STUDENTS];
       string lastNames[MAX_NUM_STUDENTS];
       string studentID[MAX_NUM_STUDENTS];
       double quizzes[MAX_NUM_STUDENTS][NUM_QUIZZES],
              labs[MAX_NUM_STUDENTS][NUM_LABS],
              midtermExam[MAX_NUM_STUDENTS],
              finalExam[MAX_NUM_STUDENTS],
              survey[MAX_NUM_STUDENTS];

       char finalSemesterGrades[MAX_NUM_STUDENTS];

       int numberOfStudents = 0;
       double highestGrade = 0.0, lowestGrade = 200.0;

       int gradeA_cnt = 0, gradeBC_cnt = 0, gradeDF_cnt = 0;
     
       ifstream inFile;
       inFile.open("studentFinalGrades.txt", ios::in);

       if (!inFile.is_open()){

              cout << "Error: Cannot open file...Exiting." << endl;
              system("pause");
              exit(0);
       }

       numberOfStudents=read_data(inFile,firstNames,lastNames,studentID,quizzes,labs,midtermExam,finalExam,survey);
     
       analyze_grades(quizzes,labs,midtermExam,finalExam,survey,finalSemesterGrades,gradeA_cnt,gradeBC_cnt,gradeDF_cnt,highestGrade,lowestGrade,numberOfStudents);
     
     
       display_results(firstNames,lastNames,studentID,finalSemesterGrades,gradeA_cnt,gradeBC_cnt,gradeDF_cnt,highestGrade,lowestGrade,numberOfStudents);
   
     
       inFile.close();
       system("pause");
       return 0;

}
int read_data(ifstream &input,
       string firstNames[], string lastNames[],
       string studentID[],
       double quizzes[][NUM_QUIZZES],
       double labs[][NUM_LABS],
       double midtermExam[],
       double finalExam[],
       double survey[]){
         
          //c stores the count of student records in file
       int c=0;
       string line;
       //ignore the header
       getline(input,line);
       //read line by line from the file
       while(getline(input,line)){
      
           stringstream ss(line);
           ss>>lastNames[c];
           ss>>firstNames[c];
           ss>>studentID[c];
           for(int i=0;i<13;i++){
               ss>>quizzes[c][i];
           }
      
           for(int i=0;i<7;i++){
               ss>>labs[c][i];
           }
          
           ss>>midtermExam[c];
           ss>>finalExam[c];
           ss>>survey[c];
           c+=1;
       }
       //return count of student record
       return c;

}
//funcntion to calculate grade
void analyze_grades(double quizzes[][NUM_QUIZZES],
       double labs[][NUM_LABS],
       double midtermExam[],
       double finalExam[],
       double survey[],
       char FinalSemesterGrades[],
       int &gradeA_cnt, int &gradeBC_cnt, int &gradeDF_cnt,
       double &highestGrade, double &lowestGrade,
       int numberOfStudents){
       double quizzTotal=0.0,labTotal=0.0;
       double total1=0.0,total2=0.0,total=0.0;
      
       //iterate for each student
          for(int i=0;i<numberOfStudents;i++){
              total1=0.0;
              total2=0.0;
              total=0.0;
              quizzTotal=0.0;
              labTotal=0.0;
             
              //sort the quizzess score
              sort(quizzes[i],quizzes[i]+NUM_QUIZZES);
         
              //sum all the quizzess except first 3 minimum score
              for(int j=3;j<13;j++){
                  quizzTotal+=quizzes[i][j];
           }
          
           //calculating sum of first 6 lab score
           for(int j=0;j<6;j++){
               labTotal+=labs[i][j];
           }
      
           //finding the total1
           total1=(0.1*(quizzTotal/10))+(0.2*finalExam[i])+(0.2*midtermExam[i])+(0.01*survey[i])+(0.5*(labTotal/6))+(0.02*labs[i][6]);
          
           //sorting lab score
           sort(labs[i],labs[i]+6);
          
           //ignore the smallest lab score in first 6 scores and add lab 7 score instead
           for(int j=1;j<7;j++){
               labTotal+=labs[i][j];
           }

           //finding the total
           total2=total1=(0.1*(quizzTotal/10))+(0.2*finalExam[i])+(0.2*midtermExam[i])+(0.01*survey[i])+(0.5*(labTotal/6));
          
           //finding maximum score
           if(total1>total2)
               total=total1;
           else
               total=total2;
              
           //finding the grade  
           if(total>90){
               FinalSemesterGrades[i]='A';
               gradeA_cnt+=1;
           }else if(total>80 && total<=90){
               FinalSemesterGrades[i]='B';
               gradeBC_cnt+=1;
           }else if(total>70 && total<=80){
               FinalSemesterGrades[i]='C';
               gradeBC_cnt+=1;
           }else if(total>60 && total<=70){
               FinalSemesterGrades[i]='D';
               gradeDF_cnt+=1;
           }else if(total<=60){
               FinalSemesterGrades[i]='F';
               gradeDF_cnt+=1;
           }
          
           //finding highest and lowest grade
           if(highestGrade<total)
               highestGrade=total;
              
           if(lowestGrade>total)
               lowestGrade=total;
          
       }
             

}

void display_results(string firstNames[], string lastNames[],
       string studentID[], char FinalSemesterGrades[],
       int gradeA_cnt, int gradeBC_cnt, int gradeDF_cnt,
       double highestGrade, double lowestGrade,
       int numberOfStudents){
       cout<<"Name\t\tID\tGrade\n";
       for(int i=0;i<numberOfStudents;i++){
           cout<<firstNames[i]<<" "<<lastNames[i]<<" "<<studentID[i]<<"\t"<<FinalSemesterGrades[i]<<"\n";
       }
       cout<<"\n\nGrade A Count: "<<gradeA_cnt<<"\n";
       cout<<"Grade B/C Count : "<<gradeBC_cnt<<"\n";
       cout<<"Grade D/F Count : "<<gradeDF_cnt<<"\n";
      
       cout<<"\nHighest Grade : "<<highestGrade<<"\n";
       cout<<"Lowest Grade     : "<<lowestGrade<<"\n";

}
      

//########################## PGM END ########################

OUTPUT
########

CAUsersVijinAW Documents\DevC+_Workspac Name Michael Alfred 4721 Prajwol Ariet 3981 Grade A ID Grade A Count: 2 Grade B/C Counte Grade D/F Counte Highest Grade : 129.527 Lowest Grade : 120.433 Press any key to continue .. .