Grade Checker

#include <iostream>
using namespace std;

int main() {

    int g;
    cout << "Enter your GWA: ";
    cin >> g;`
    if (g>=80)
    {
        cout << "Grade: A+";
    }
    else

    {
        if (g>=70)
        cout << "Grade: A";
        else
        {
            if (g>=60)
            cout << "Grade: B";
            else
            {
                if (g>=40)
                cout << "Grade: C";
                else
                {
                    cout << "Grade: F";
                }
            }
        }
    }

    return 0;

}