/*
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*/
package quadraticequation;
/**
*
* @author faridyusof727
*/
import java.util.Scanner;
public class QuadraticEquation {
private double a;
private double b;
private double c;
public QuadraticEquation (double a, double b, double c)
{
this.a = a;
this.b = b;
this.c = c;
}
public double getA()
{
return a;
}
public double getB()
{
return b;
}
public double getC()
{
return c;
}
public double getDiscriminant()
{
double x;
x = (b*b) - (4*a*c);
return x;
}
public double getR1()
{
double x;
x = (-(b) + Math.sqrt(getDiscriminant()))/(2*a) ;
return x;
}
public double getR2()
{
double x;
x = (-(b) - Math.sqrt(getDiscriminant()))/(2*a) ;
return x;
}
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
double a1, b1,c1;
System.out.println("Value a:");
a1 = scan.nextDouble();
System.out.println("Value b:");
b1 = scan.nextDouble();
System.out.println("Value c:");
c1 = scan.nextDouble();
QuadraticEquation calc = new QuadraticEquation(a1, b1, c1);
if (calc.getDiscriminant() < 0) {
System.out.println("\nThe equation has no root.");
}
else if (calc.getDiscriminant() > 0) {
System.out.println("\nThe first root is "+calc.getR1()+" and the second root is "+calc.getR2()+".");
}
else if (calc.getDiscriminant() == 0) {
System.out.println("\nBoth root is "+calc.getR1());
}
}
}
