틀린점을 알고싶습니다
import java.util.Scanner;
/**
* Created by parkch on 9/13/15 18:52.
*/
public class Main
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
double a = scanner.nextDouble();
double b = scanner.nextDouble();
double c = scanner.nextDouble();
double r1, r2, dis;
dis = Math.pow(b, 2) - (4 * a * c);
if (dis < 0)
{
System.out.print("complex");
System.exit(0);
}
dis = Math.sqrt(dis);
r1 = (-b + dis) / 2 * a;
r2 = (-b - dis) / 2 * a;
if(r1>r2)
{
System.out.printf("%.1f\n", r1);
}
else
{
System.out.printf("%.1f\n", r2);
}
}
}
버림을 하라고 했는데 %.1f를 사용하면 반올림을합니다.
그런데 그전에 제출했던 버림도 같은 결과가 나와서 질문드립니다
import java.util.Scanner;
/**
* Created by parkch on 9/13/15 18:52.
*/
public class Main
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
double a = scanner.nextDouble();
double b = scanner.nextDouble();
double c = scanner.nextDouble();
double r1, r2, dis;
dis = Math.pow(b, 2) - (4 * a * c);
if (dis < 0)
{
System.out.print("complex");
System.exit(0);
}
dis = Math.sqrt(dis);
r1 = (-b + dis) / 2 * a;
r2 = (-b - dis) / 2 * a;
r1 = (int) (r1 * 10) / 10f;
r2 = (int) (r2 * 10) / 10f;
if(r1>r2)
{
System.out.printf("%.1f\n", r1);
}
else
{
System.out.printf("%.1f\n", r2);
}
}
}
위와 같이 제출하였습니다
