Question

我试图为我的Java类创建一个简短的程序，要求我计算一个玩家的击球平均值。出于某种原因，当我去除两个变量时，即使用户输入数据，我也得到0.0。我添加了print语句来尝试调试我的代码但数字在用户输入后出现，但是当我将它们传递给battingAvg时它们并没有分开。其他人可以发现我的错误吗？

import java.util.Scanner;

public class Problem42 {

    public static void main(String[] args) {

        //Keyboard input for hits & number of at-bats
        Scanner numberOfHits = new Scanner( System.in);
        System.out.print("How many hits does the batter have?");
        int hits = numberOfHits.nextInt();

        System.out.println(hits);

        Scanner numberOfBats = new Scanner( System.in);
        System.out.print("What is the batters number of at-bats?");
        int atBats = numberOfBats.nextInt();

        // Calculating the batting average
        double battingAvg = (hits) / (atBats);

        System.out.println(battingAvg);
        //Eligibility for the All Stars Game
        if (battingAvg > .300) {
            System.out.println("Player is eligible for All Stars Game.");
        } else { 
            System.out.println("Player is ineligible for All Stars Game.");
        }

        numberOfHits.close();
        numberOfBats.close();
    }

}

Answer 1

double battingAvg = (hits) / (atBats);

由于hits和atBats是整数，因此会发生整数除法。将其中任何一个加倍以获得double结果。

double battingAvg = hits / (double)atBats;

Java代码问题：划分两个变量

1 个答案: