How to find if there is an ongoing event at a given year?

I was trying to solve an exercise which asks you to find whether an event is held at a given year. The year is given through user input. The event is held every 4 years, beginning with/firstly held at year 0. The catch is that you can't use loops because we hadn't learned them yet. I solved the exercise but I was wondering if there was any other way to solve it. My code is down below.

int x;
cin>>x;
if(x%2==0)
{
    if((x<10)&&(x%10==4,8)&&(x>=0))
    {
        cout<<"Event";
    }

    else
    if((x/10%2!=0)&&(x%10!=4,8))
    {
        cout<<"Event";
    }
}
else 
cout<<"No event";