#include <iostream>

using namespace std;

class bilangan
{
    private:
        int N;
    public:
        void prima();
        void prima(int, int);
};

void bilangan::prima()
{
    int i;
    cout << "Masukkan batas bilangan prima: " << endl;
    cin >> N;
    cout <<"-------------------------------------" << endl;
    cout << "bilangan prima yang anda minta: "<< endl;
    for(i = 2; i <= N; i++)
    {
        if(i==2||i==3||i==5||i==7)
            cout << i << " ";

        else if(i%2!=0&&i%3!=0&&i%5!=0&&i%7!=0)
            cout << i << " ";
    }

    cout << endl;
    cout <<"-------------------------------------"<< endl;
    cout <<"-------------------------------------"<< endl;
}

void bilangan::prima(int a, int b)
{
    int i;
    cout << "Masukkan batas awal bilangan prima: " << endl;
    cin >> a;
    cout << "Masukkan batas akhir bilangan prima: " << endl;
    cin >> b;
    cout <<"-------------------------------------" << endl;
    cout << "bilangan prima yang anda minta: "<< endl;

    for(i = a; i <= b; i++)
    {
        if(i==2||i==3||i==5||i==7)
            cout << i << " ";

        else if(i%2!=0&&i%3!=0&&i%5!=0&&i%7!=0)
            cout << i << " ";
    }
}

int main()
{
    int a, b;
    bilangan hsl;

    hsl.prima();
    hsl.prima(a,b);
}