scoreaverage.java

JAVA编程思想源代码 值得一下 很难找的

package chapter4;

import java.util.Scanner;

public class ScoreAverage {
public static void main(String [ ] args){
    Scanner scanner=new Scanner(System.in);
    int score=0;
    int sum=0;
    int count=-1;
    while(score!=-1){
      count++;
      sum+=score;
      System.out.print("输入分数（-1结束）：");
      score=scanner.nextInt();

    }
    System.out.println("平均："+(double)sum/count);
  }
}