Hi. I'm David a newbie. I have just started Classes in C++ and I'm doing a GPA Calculator program. I have most of the program working but the average calculator seems to be giving me trouble. Please help. This is open to constructive criticism. All inputs will be gladly appreciated. Thank you in advance.
#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
class GpaCalculator
{
public:
void displayMessage ()
{
char gradeLetter [4] = {};
string courseName [4] = {""};
for ( int x = 0; x < 4; x++ )
{
cout<< "Please enter name of course:";
getline(cin, courseName [x]);
for ( int y = 0; y < 4; y++ )
{
cout<< "Enter grade recieved:";
cin>> gradeLetter [y];
break;
}
cin.ignore (100, '\n');
}
system("cls");
for ( int x = 0; x < 4; x++ )
{
for ( int y = 0; y < 4; y++ )
{
cout<< courseName[x]<< right<< setw (7)<< gradeLetter[y]<< '\n'<<'\n';
break;
}
}
}
double getAverage ()
{
char letter [4] = {'a', 'b', 'c', 'd'};
char gradeLetter [4] = {'a', 'b', 'c', 'd'};
double average = 0.0;
for ( int y = 0; y < 4; y++ )
{
if (gradeLetter [y] == 'a')
{
gradeLetter [y] = 4;
}
else
if (gradeLetter [y] == letter[1])
{
gradeLetter [y] = 3;
}
else
if (gradeLetter [y] == letter[2])
{
gradeLetter [y] = 2;
}
else
if (gradeLetter [y] == letter[3])
{
gradeLetter [y] = 1;
}
}
average = ( gradeLetter [0] + gradeLetter [1] + gradeLetter [2] + gradeLetter [3] ) / 4;
return average;
}
private:
double average;
string courseName [4];
char gradeLetter [4];
char letter [4];
};
int main()
{
GpaCalculator cal;
cal.displayMessage ();
cout<< "Your GPA is:"<< cal.getAverage ();
return 0;
}
