ex7_16.java

判断三角形

//7.16(从控制台输入)
import java.util.*;
public class Ex7_16{
  public static void main (String[] args) {
  	System.out.println("请输入一段数字(以空格作为分割):");
  	Scanner scanner1=new Scanner(System.in);
  	scanner1.useDelimiter("\n");//scanner1利用换行符作为分割符，以供scanner2作为结束符使用
  	String s=scanner1.next();
  	Scanner scanner2=new Scanner(s);
  	int sum=0,count=0;double avaerage;
  	while(scanner2.hasNext()){//得到输入的数字，空格作为分割，回车作为结束
  	   sum+=scanner2.nextInt();
  	   count++;
  	 }
      avaerage=(double)(sum)/count;
  	 System.out.print("和为："+sum+" 平均值是："+avaerage);
  }
}