Help figuring out equation.

How could I write these so that they would work?The "A" and the "F" work but the other 3 don't.

Code:

---

cout << "Letter Grades" <<endl;
        for (int i = 0; i < MAXGRADES; i++)
        {
                if (grade[i]>89)
                        cout<<"A"<<grade[i];
                if (90>grade[i]>79)
                        cout<<"B"<<grade[i];
                if (80>grade[i]>69)
                        cout<<"C"<<grade[i];
                if (70>grade[i]>59)
                        cout<<"D"<<grade[i];
                if (grade[i]<60)
                        cout<<"F"<<grade[i];
        }

---

Use &&, which performs a logical AND on two arguments.

The construct:

Code:

---

a > b > c

---

Does not do what you think it does. Instead, use:

Code:

---

a > b && b > c

---

OK. Thanks. I should have known that!

This is all you should need:

Code:

---

cout << "Letter Grades" <<endl;
for (int i = 0; i < MAXGRADES; i++)
{
    if (grade[i]>89)
        cout<<"A"<<grade[i];
    else if (grade[i]>79)
        cout<<"B"<<grade[i];
    else if (grade[i]>69)
        cout<<"C"<<grade[i];
    else if (grade[i]>59)
        cout<<"D"<<grade[i];
    else
        cout<<"F"<<grade[i];
}

---