simple else if statement utilizing a menu system

bookpointsystem.cpp

#include <iostream>
using namespace std;

int main()
{
    int books, points, month;

    cout << "How many books have you purchased this semester?\n";
    cin >> books;

    if (books == 0)
    {
        cout << "You earn 0 points";
    }
    else if (books == 1)
    {
        cout << "You earn 5 points";
    }
    else if (books == 2)
    {
        cout << "You earn 15 points";
    }
    else if (books == 3)
    {
        cout << "You earn 30 points";
    }
    else if (books >= 4)
    {
        cout << "You earn 60 points";
    }
    else
    {
        cout << "Wrong input, please choose the right number\n";
    }
    return 0;
}