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我在线上收到一条错误消息“Math.sqrt(Math.pow((x2) - (x1),2)+ Math.pow((y2) - ( y1),2));“我无法弄清楚问题所在。二元运算符的坏操作数类型' - '
import java.util.Scanner;
import java.lang.Object;
public class Distance
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
System.out.println ("Enter x1: ");
String x1=scan.nextLine();
System.out.println ("Enter y1: ");
String y1=scan.nextLine();
System.out.println ("Enter x2: ");
String x2=scan.nextLine();
System.out.println ("Enter y2: ");
String y2=scan.nextLine();
double distance = Math.sqrt(Math.pow ((x2)-(x1), 2)+Math.pow((y2)-(y1), 2));
System.out.println ("The distance between the points is: "+ distance);
}
}
或者只是使用'扫描仪#nextInt()'。 – hexafraction 2014-09-18 23:53:28
我会听起来像一个白痴,但我会把它放在代码中? – Unknown 2014-09-18 23:57:05