Grading code

[yhassan86]

When I try to run my code, after 2 tries, the average does not compute.
I have to compile again for it to work again even though there was no change to the code.

Here is my code:

#include <iostream>

using namespace std;


int main()
{
bool topic = true;

string course, EE306, EE312, EE330, CSC210;

float Average, Homework, Midterm1, Midterm2, Final, Project1, Project2;

while (topic == true)
{

cout << "Enter the course: ";

cin >> course;

cout << endl;

if (course == "EE306" || course == "EE312" || course == "EE330")
{
cout << "Homework: ";
cin >> Homework;
cout << "Midterm 1: ";
cin >> Midterm1;
cout << "Midterm 2: ";
cin >> Midterm2;
cout << "Final: ";
cin >> Final;
}

else if (course == "CSC210")
{
cout << "Project 1: ";
cin >> Project1;
cout << "Project 2: ";
cin >> Project2;
}

else
{
cout << "Invalid Entry. Please try again.";
}

cout << endl;

if (course == "EE306")
{
Average = Homework*0.1 + Midterm1*.25 + Midterm2*.25 + Final*.4;
}

else if (course == "EE312")
{
Average = Homework*0.15 + Midterm1*.25 + Midterm2*.25 + Final*.35;
}

else if (course == "EE330")
{
Average = Homework*0.15 + Midterm1*.25 + Midterm2*.25 + Final*.35;
}

else if (course == "CSC210")
{
Average = Project1*.49 + Project2*.51;
}

if (Average < 60)
{
cout << "Your Average is " << Average << endl << "Your grade is F." << endl << "=== SORRY YOU FAILED ! ===" << endl;
}

else if ((Average >= 60) && (Average < 70))
{
cout << "Your Average is " << Average << endl << "Your grade is D." << endl << "=== YOU PASSED. ===" << endl;
}

else if ((Average >= 70) && (Average <= 72))
{
cout << "Your Average is " << Average << endl << "Your grade is C- ." << endl << "=== YOU PASSED. ===" << endl;
}

else if ((Average > 72) && (Average <= 76))
{
cout << "Your Average is " << Average << endl << "Your grade is C." << endl << "=== YOU PASSED. ===" << endl;
}

else if ((Average > 76) && (Average <= 79))
{
cout << "Your Average is " << Average << endl << "Your grade is C+ ." << endl << "=== YOU PASSED. ===" << endl;
}

else if ((Average >= 80) && (Average < 82))
{
cout << "Your Average is " << Average << endl << "Your grade is B- ." << endl << "=== GOOD WORK ! ===" << endl;
}

else if ((Average > 82) && (Average <= 86))
{
cout << "Your Average is " << Average << endl << "Your grade is B." << endl << "=== GOOD WORK ! ===" << endl;
}

else if ((Average > 86) && (Average <= 89))
{
cout << "Your Average is " << Average << endl << "Your grade is B+ ." << endl << "=== GOOD WORK ! ===" << endl;
}

else if ((Average >= 90) && (Average < 92))
{
cout << "Your Average is " << Average << endl << "Your grade is A- ." << endl << " === CONGRATULATIONS !! ===" << endl;
}

else if ((Average > 92) && (Average <= 96))
{
cout << "Your Average is " << Average << endl << "Your grade is A." << endl << " === CONGRATULATIONS !! ===" << endl;
}

else if ((Average > 96) && (Average <= 100))
{
cout << "Your Average is " << Average << endl << "Your grade is A+ ." << endl << " === CONGRATULATIONS !! ===" << endl;
}

cout << endl;

}
return 0;
}


and here it is when i run it:

Enter the course: EE306

Homework: 100
Midterm 1: 89
Midterm 2: 85
Final: 92

Your Average is 90.3
Your grade is A- .
=== CONGRATULATIONS !! ===

Enter the course: EE312

Homework: 100
Midterm 1: 96
Midterm 2: 81
Final: 89

Your Average is 90.4
Your grade is A- .
=== CONGRATULATIONS !! ===

Enter the course: EE330

Homework: 98
Midterm 1: 98
Midterm 2: 75
Final: 89


Enter the course:

[againtry]

You need to do 2 things:

1) In future please use code tags - see <> in the Format toolbar on the right --->
2) You need to clear invalid data from the input stream, like so:

else
        {
            cout << "Invalid Entry. Please try again.";
            cin.clear();
            cin.ignore(256,'\n'); // <-- 256 at least, RTM for what all this means
        }