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#include <iostream>
#include <cstdlib>
using namespace std;
class StudentRecord {
public:
StudentRecord (double firstQuizze, double secondQuizze, double midtermGrade, double finalGrade);
StudentRecord (double firstQuizze, double secondQuizze, double midtermGrade);
StudentRecord (double firstQuizze, double secondQuizze);
StudentRecord (double firstQuizze);
StudentRecord ();
void set (double firstQuizze, double secondQuizze, double midtermGrade, double finalGrade);
double getQuizze1 (); // return first quizze;
double getQuizze2 ();
double getMidterm ();
double getFinal ();
double getTotalAverageScores ();
char getLetterGrade ();
void output (ostream& outs); // output to a file or screen
private:
double quizze1; // from 0 to 10 {(25/2)% of the grade)
double quizze2;
double midterm; // from 0 to 100 (25% of the grade)
double final; // from 0 to 100 (50% of the grade)
double totalAverageScore; // total score of all the quizzes, medterm, and final (from 0 to 100)
char letterGrade;
void calculateScore ();
void givingLetterGrade ();
};
int main() {
StudentRecord student1(5, 10, 50, 100);
cout << "The score of the student 1 is: " << endl;
student1.output(cout);
StudentRecord student2(-1, 10, 100, 100); // THIS IS AN INVALID INPUT
cout << "The score of the student 2 is: " << endl;
student2.output(cout);
return 0;
}
StudentRecord::StudentRecord (double firstQuizze, double secondQuizze, double midtermGrade, double finalGrade) {
if (((firstQuizze > 10) && (firstQuizze < 0)) || ((secondQuizze > 10) && (secondQuizze < 0)) || ((midtermGrade > 100) && (midtermGrade < 0)) || ((finalGrade > 100) && (finalGrade < 0))) {
cout << "One of the scores is not correct!\n";
exit(1);
}
quizze1 = firstQuizze;
quizze2 = secondQuizze;
midterm = midtermGrade;
final = finalGrade;
}
StudentRecord::StudentRecord (double firstQuizze, double secondQuizze, double midtermGrade) : final(0.0){
//The program seems not go into the if statemts.
if (((firstQuizze > 10) && (firstQuizze < 0)) || ((secondQuizze > 10) && (secondQuizze < 0)) || ((midtermGrade > 100) && (midtermGrade < 0))) {
cout << "One of the scores is not correct!\n";
exit(1);
}
quizze1 = firstQuizze;
quizze2 = secondQuizze;
midterm = midtermGrade;
}
StudentRecord::StudentRecord (double firstQuizze, double secondQuizze) : final(0.0), midterm(0.0) {
if (((firstQuizze > 10) && (firstQuizze < 0)) || ((secondQuizze > 10) && (secondQuizze < 0))) {
cout << "One of the scores is not correct!\n";
exit(1);
}
quizze1 = firstQuizze;
quizze2 = secondQuizze;
}
StudentRecord::StudentRecord (double firstQuizze) : final(0.0), midterm(0.0), quizze2(0.0) {
if (((firstQuizze > 10) && (firstQuizze < 0))) {
cout << "One of the scores is not correct!\n";
exit(1);
}
quizze1 = firstQuizze;
}
StudentRecord::StudentRecord () : final(0.0), midterm(0.0), quizze2(0.0), quizze1(0.0) {
}
void StudentRecord::set(double firstQuizze, double secondQuizze, double midtermGrade, double finalGrade) {
using namespace std;
if (((firstQuizze > 10) && (firstQuizze < 0)) || ((secondQuizze > 10) && (secondQuizze < 0)) || ((midtermGrade > 100) && (midtermGrade < 0)) || ((finalGrade > 100) && (finalGrade < 0))) {
cout << "One of the scores is not correct!\n";
exit(1);
}
quizze1 = firstQuizze;
quizze2 = secondQuizze;
midterm = midtermGrade;
final = finalGrade;
}
double StudentRecord::getQuizze1() {
return quizze1;
}
double StudentRecord::getQuizze2() {
return quizze2;
}
double StudentRecord::getMidterm() {
return midterm;
}
double StudentRecord::getFinal() {
return final;
}
void StudentRecord::calculateScore() {
totalAverageScore = (final * (50.0 / 100)) + (midterm * (25.0 / 100)) + ((((quizze1 + quizze2) / 2.0) * 10.0) * (25.0 / 100));
}
double StudentRecord::getTotalAverageScores() {
calculateScore();
return totalAverageScore;
}
void StudentRecord::givingLetterGrade () {
if (totalAverageScore >= 90)
letterGrade = 'A';
else if ((totalAverageScore < 90) && (totalAverageScore >= 80))
letterGrade = 'B';
else if ((totalAverageScore < 80) && (totalAverageScore >= 70))
letterGrade = 'C';
else if ((totalAverageScore < 70) && (totalAverageScore >= 60))
letterGrade = 'D';
else
letterGrade = 'F';
}
char StudentRecord::getLetterGrade() {
givingLetterGrade();
return letterGrade;
}
void StudentRecord::output(ostream& outs) {
outs.setf(ios::fixed);
outs.setf(ios::showpoint);
outs.precision(2);
outs << "The first quizze is: " << getQuizze1() << endl;
outs << "The second quizze is: " << getQuizze2() << endl;
outs << "The midterm is: " << getMidterm() << endl;
outs << "The final is: " << getFinal() << endl;
outs << "The total average score is: " << getTotalAverageScores() << endl;
outs << endl;
outs << "The final letter grade is: " << getLetterGrade()<< endl;
outs << endl;
}
/*
Sample Dialouge:
The score of the student 1 is:
The first quizze is: 5.00
The second quizze is: 10.00
The midterm is: 50.00
The final is: 100.00
The total average score is: 81.25
The final letter grade is: B
The score of the student 2 is:
The first quizze is: -1.00
The second quizze is: 10.00
The midterm is: 100.00
The final is: 100.00
The total average score is: 86.25
The final letter grade is: B
Program ended with exit code: 0
*/
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