/*
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 * and open the template in the editor.
 */
package zadanie2;
import java.util.Scanner;

/**
 *
 * @author Adam6560b
 */
public class Zadanie2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    double a=0,b=0,c=0,d=0;
    double[] x = new double[3];
    try{
    
        Scanner in= new Scanner(System.in);
        
        System.out.print("podaj a: ");
        a=in.nextDouble();
        System.out.print("podaj b: ");
        b=in.nextDouble();
        System.out.print("podaj c: ");
        c=in.nextDouble();
        
        
        System.out.println(Rkw.delta(a,b,c,d));
        
    }catch(Exception ex){
        System.out.println("Złe dane");
    }finally{
        System.out.println("koniec obliczen");
    }
        
    }
    
    
    public  double miejscazerowe(double d){
    if(d>0){}
    return d;
    };

    class Rkw{
    
    public  double delta(double a, double b, double c, double d)
    {
        d=Math.pow(b, 2)-4*a*c; 
        return d;   
        
    };
}    
}