编辑代码

import java.util.Scanner;
public class Example1
{
    public static void main(String args[])
    {
        double a,b,c;
            System.out.println("请输入a:");
            Scanner sc=new Scanner(System.in);
            a=sc.nextDouble();
            System.out.println("请输入b:");
            Scanner sb=new Scanner(System.in);
            b=sb.nextDouble();
            System.out.println("请输入c:");
            Scanner sa=new Scanner(System.in);
            c=sa.nextDouble();
            if(b*b-4*a*c<0)
            {
                System.out.println("该方程无解");
            }
            else
            {
                double x1=(-b+Math.sqrt(b*b-4*a*c)*1/(2*a));
                double x2=(-b-Math.sqrt(b*b-4*a*c)*1/(2*a));
                System.out.println("方程的跟为"+x1);
                System.out.println("方程的跟为"+x2);
            }
        
    }
}