Question

C++ Visual Studio 2019

Part A :

Program Description:

Write a program to generate a report based on input received from a text file. Suppose the input text file student_grades.txt contains the student’s Last name , First name, SSN, Test1, Test2, Test3 and Test4. (25%)

i.e.

Alfalfa   Aloysius   123-45-6789 40.0    90.0   100.0    83.0

Generate the output Report File student_final.txt in the following format :

LastName FirstName   SSN Test1   Test2   Test3   Test4 Average FinalGrade

i.e.

Alfalfa   Aloysius   123-45-6789 40.0    90.0   100.0    83.0    78.25 .0   C+

The program must be written to use the enum letterGrade :

enum letterGrade {A_PLUS,A, A_MINUS,B_PLUS,B, B_MINUS, C_PLUS,C, C_MINUS,D_PLUS,D, D_MINUS,F } ;

Use the following function prototype for deriving letter grade :

letterGrade deriveGrade(double average) ;

The average is calculated as follows : (test1 + test2 + test3 + test4)/4.0

The function deriveGrade should derive the letterGrade of the student based on the following grading scale :

Letter Grade	Percentage	GPA
A+	97%+	4.33/4.00 or 4.00/4.00
A	93%-96%	4.00/4.00
A-	90%-92%	3.67/4.00
B+	87%-89%	3.33/4.00
B	83%-86%	3.00/4.00
B-	80%-82%	2.67/4.00
C+	77%-79%	2.33/4.00
C	73%-76%	2.00/4.00
C-	70%-72%	1.67/4.00
D+	67%-69%	1.33/4.00
D	63%-66%	1.00/4.00
D-	60%-62%	0.67/4.00
F	0%-59%	0.00/4.00

Also provide the following function :

         string convertToText(letterGrade grade) ; //This function converts a letterGrade type to a string type.

Requirement :

• The namespace ‘gradeOpt’ definition should contain the following members :(15%)
  1. the enum letterGrade definition,
  2. deriveGrade(..) function prototype and
  3. convertToText(…) function prototype
• Add the namespace ‘gradeOpt ‘ to the grade.h header file and the namespace member function definitions to the file grade.cpp file. (10%)

Input text file student_grades.txt

Alfalfa   Aloysius   123-45-6789    90.0   100.0    83.0    49.0 
Alfred    Francis    123-12-1234    97.0    96.0    97.0    48.0 
Gerty     Gramma     567-89-0123    80.0    60.0    40.0    44.0
Android   Alexis     087-65-4321    23.0    36.0    45.0    47.0
Bumpkin   Fred       456-78-9012    78.0    88.0    77.0    45.0
Rubble    Betty      234-56-7890    90.0    80.0    90.0    46.0
Noshow    Cecil      345-67-8901    81.0    65.0     49.0   43.0
Buff      Bif        632-79-9939    20.0    30.0    40.0    50.0
Airpump   Andrew     223-45-6789    75.0    90.0    100.0   83.0
Backus    Jim        143-12-1234    85.0    97.0    96.0    97.0
Carnivore Art        565-89-0123    71.0    80.0    60.0    40.0
Dandy     Jim        087-75-4321    92.0    23.0    36.0    45.0
Elephant  Ima        456-71-9012    19.0    78.0    88.0    77.0
Franklin  Benny      234-56-2890    50.0    90.0    80.0    90.0
George    Boy        345-67-3901    40.0    11.0    91.0    84.0
Heffalump Harvey     632-79-9439    30.0    91.0    20.0    30.0

Answer 1

C++ Code:-

grade.hpp

namespace stdGrade{

enum letter_grade {A, A_PLUS, A_MINUS, B,B_PLUS, B_MINUS, C, C_PLUS, C_MINUS,D,D_PLUS,D_MINUS,F } ;

letter_grade deriveGrade(double average)

{

if(average>=97)

{

return A_PLUS;

}

else if(average>=93)

{

return A;

}

else if(average>=90)

{

return A_MINUS;

}

else if(average>=87)

{

return B_PLUS;

}

else if(average>=83)

{

return B;

}

else if(average>=80)

{

return B_MINUS;

}

else if(average>=77)

{

return C_PLUS;

}

else if(average>=73)

{

return C;

}

else if(average>=70)

{

return C_MINUS;

}

else if(average>=67)

{

return D_PLUS;

}

else if(average>=63)

{

return D;

}

else if(average>=60)

{

return D_MINUS;

}

else{

return F;

}

}

}

studentGrade.cpp

#include<iostream>

#include<fstream>

using namespace std;

#include "grade.hpp"

using namespace stdGrade;

string convertToText(letter_grade grade)

{

if(grade==A_PLUS)

return "A+";

else if(grade==A)

return "A";

else if(grade==A_MINUS)

return "A-";

else if(grade==B_PLUS)

return "B+";

else if(grade==B)

return "B";

else if(grade==B_MINUS)

return "B-";

else if(grade==C_PLUS)

return "C+";

else if(grade==C)

return "C";

else if(grade==C_MINUS)

return "C-";

else if(grade==D_PLUS)

return "D+";

else if(grade==D)

return "D";

else if(grade==D_MINUS)

return "D-";

else

return "F";

}

int main()

{

ifstream input;

input.open("student_grades.txt");

ofstream output;

output.open("student_final.txt");

string lname, fname, ssn, grd;

double t1, t2, t3, t4;

double average;

while(!input.eof())

{

input>>lname>>fname>>ssn;

input>>t1>>t2>>t3>>t4;

average=(t1+t2+t3+t4)/4;

letter_grade grade=deriveGrade(average);

grd=convertToText(grade);

//output to file

output<<lname<<" "<<fname<<" "<<ssn<<" "<<t1<<" "<<t2<<" "<<t3<<" "<<t4<<" "<<average<<" "<<grd<<endl;

}

//print a success message

cout<<"Successfully written to output file!"<<endl;

cin.get();

return 0;

}

ScreenShot:-

studentGrade.cpp

grade.hpp (please save this file as grade.hpp)

Output:-

Input File:-

Thank You....!!!!
For any query, please comment.
If you are satisfied with the above answer, then please thumbs up or upvote the answer.