PRIME NUMBER OR NOT IN C++

#include <iostream>
using namespace std;

int main ()
{
    int num, temp = 0;

    cout<<"PLEASE ENTER A NUMBER : ";
    cin>>num;

    for (int i = 2; i <= num-1; i++)
    {
        if (num % i == 0)
        {
            cout<<num<<" IS NOT A PRIME NUMBER"<<endl;
            temp = 1;
            break;
        }
    }
    if (temp == 0)
    {
        cout<<num<<" IS A PRIME NUMBER"<<endl;
    }

    return 0;
}

OUTPUT