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//Computer Science 40
//Term Project: GPA Calculator
// Eric Haro
#include<iostream>
#include<iomanip>
#include<string>
#include<cstdlib>
#include<cctype>
#include<fstream>
using namespace std;
// ====== Function Protype =======
int get_courseload();
string get_coursename(string *, int x);
void get_grade(char *, int x);
void get_units(int *, int x);
bool repeat(bool &);
int sum_units(int *, int x);
int sum_gradepts(int *, int *, char *, int);
int main()
{
// ======== Main Functions ==========
cout << "This program will calculate your semester's Grade Point Average:\n\n";
string *course;
char *grade;
int *units, *gradepoints, courseload, unitSum = 0, gpSum = 0;
bool again;
const int SIZE = 20;
int grdpts[SIZE];
double gpa, gp, u;
ofstream ofile("GPA.txt");
ifstream ifile;
//do while loop to prompt user until user is done
//wanting to determine her or his grade point average
do
{
// Prompts user for number of classes
courseload = get_courseload();
cout << endl << endl;
// Function Calls
course = new string[courseload];
grade = new char[courseload];
units = new int[courseload];
gradepoints = new int[courseload];
//for loop to repeat course names, grades and numbers of units
for (int t = 0; t < courseload; t++)
{
cin.ignore(20, '\n');
cout << t + 1 << ". ";
// Function calls
course[t] = get_coursename(course, t);
get_grade(grade, t);
cin.ignore(20, '\n');
grade[t] = toupper(grade[t]);
get_units(units, t);
unitSum += sum_units(units, t);
gpSum += sum_gradepts(gradepoints, units, grade, t);
grdpts[t] = sum_gradepts(gradepoints, units, grade, t);
cout << endl << endl;
}
// Calculates the GPA
u = unitSum;
gp = gpSum;
gpa = gp / u;
// Displays output to text file
ofile << endl << endl;
ofile << "Course Grade Units\n";
ofile << "-----------------------------------------\n";
for (int v = 0; v < courseload; v++)
{
ofile << left << setw(23) << course[v];
ofile << setw(15) << grade[v];
ofile << setw(10) << units[v] << endl;
}
ofile << endl << endl;
ofile << "The total points are " << gp << endl;
ofile << "The total units are " << u << endl;
ofile << "Your GPA for the semester is " << setprecision(2) << setw(3) << gpa << endl << endl;
// Run program again?
repeat(again);
// End of Loop
} while (again);
delete[] course;
delete[] grade;
delete[] units;
delete[] gradepoints;
system("pause");
return 0;
}
int get_courseload()
{
int x;
cout << "How many classes are you enrolled to this semester? ";
cin >> x;
return x;
}
// ========= Function Definitions ==========
string get_coursename(string *h, int x)
{
cout << "What is the name of the class? ";
getline(cin, h[x]);
return h[x];
}
void get_grade(char *x, int y)
{
cout << "What is your grade for this class? ";
x[y] = cin.get();
}
void get_units(int *x, int y)
{
cout << "How many units is this class worth? ";
cin >> x[y];
}
int sum_units(int *y, int x)
{
int g = y[x];
return g;
}
int sum_gradepts(int *w, int *x, char *y, int z)
{
int c;
if (y[z] == 'A')
{
w[z] = 4;
}
else if (y[z] == 'B')
{
w[z] = 3;
}
else if (y[z] == 'C')
{
w[z] = 2;
}
else if (y[z] == 'D')
{
w[z] = 1;
}
else
{
w[z] = 0;
}
c = (w[z]) * (x[z]);
return c;
}
bool repeat(bool &yes)
{
char x;
cout << "Do you wish to calculate your grade point average for another semester?\n";
cout << "(Y/N) ";
cin >> x;
cin.ignore();
if (x == 'y' || x == 'Y')
yes = true;
else
yes = false;
return yes;
}
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