package debugging;

public class Razhroscevanje_1_Nikola_Vocanec {

    public static void serija(int n, char ch)
    {
    for ( ; n> 0; n--){
System.out.print(ch);}
    }

    public static void okvir(int visina)
    {
        //System.out.println("visina je:" +visina);
        serija (visina, '*');

        System.out.println();
        for (int v = 0; v < visina - 2; v++)
        {
            System.out.print('*');
            serija(visina-2, ' ');
            System.out.println('*');
        }
        serija(visina, '*');
    }
    public static void veckratnik (int stevilo)
    {if (stevilo == 0) {
        System.out.println("Vpisano stevilo 0 ni veckratnik nobenega stevila");
    } else
        if (stevilo % 3 == 0)
            System.out.println(" Stevilo "+ stevilo +" je veckratnik stevila 3!");
        else
            System.out.println("Stevilo " + stevilo +" ni veckatnik stevila 3!");

    }
public static void izpis ()
{
    for (int i=0; i <=100; i++)
    {
        if(i%3==0 || i % 5 == 0)  System.out.println(i);
    }
}

public static void kvadratna (double a , double b , double c)
{
    double d , x1, x2;

    d = (b * b)- 4 *a * c;

    if (d > 0 )
    {
        x1 = ((-b + Math.sqrt(d)))/ (2*a);
        x2 = ((-b - Math.sqrt(d)))/  (2*a);

        System.out.println("Kvadratna enacba ima dve realni ničli : "+ x1 +", " + x2);
    }
    else

    {
        System.out.println ("Kvadratna enačba nima realnih ničel");
    }
}

public static void main (String[] args)
{
    okvir(5);

    System.out.println("\n");

    veckratnik(0);
    veckratnik(15);
    veckratnik(5);

    System.out.println();

    izpis();

    System.out.println();

    kvadratna (2,4,1);

}
}