Grading system in C++

Question

So this is my C++ question :

Write a program that translates a letter grade into a number grade. Letter grades are A, B, C, D and F, possibly followed by + or -. Th

Answer 1

Simply adding more cases would help. Modifying your code as below:

    int main ()
    {
    String grade;
    float value;
    cout << "Enter letter grade : " ;
    cin >> grade;

    switch(grade)
    {
    case "A" : value = 4;
        break;
    case "A+" : value = 4.3;
        break;
    case "A-" : value = 3.7;
        break;
    case "B" : value = 3;
        break;
    case "B+" : value = 3.3;
        break;
    case "B-" : value = 2.7;
        break;        
    case "C" : value = 2;
        break;
    case "C+" : value = 2.3;
        break;
    case "C-" : value = 1.7;
        break;        
    case "D" : value = 1;
        break;
    case "D+" : value = 1.3;
        break;
    case "D-" : value = 0.7;
        break;        
    case "F" : value = 0;
        break;
    default : cout << "Wrong input " << endl;
        break;
    }

    cout << value;
    system("PAUSE");
    return 0;

    }

This is a straightforward extension of what you did, there can be million other ways.