PJ Lab 1

//Funkcija
package prvi;

abstract class Funkcija {
    public abstract void nula();
    public abstract double uTojTacki();
}

//KvadratniTrinom
package prvi;
import java.util.Scanner;

public class KvadratniTrinom extends Funkcija {
    double a, b, c;

    public KvadratniTrinom() {
        Scanner unesi = new Scanner(System.in);
        a = unesi.nextDouble();
        b = unesi.nextDouble();
        c = unesi.nextDouble();
        nula();
    }

    public void nula(){
        double c = 0;
        int i = 1;
        if ( (a + b) / 2 < a && (a + b) / 2 > b ) {
            System.out.println("Nema resenja!\n");
            return;
        }
        while (a < -b/a && b < -b/2*a) {
            c = (a + b) / Math.pow(2, i);
            i++;
        }
        System.out.printf("%5f", c);
    }

    public double uTojTacki() {
        return 0;
    }
}