Question

我正在创建一个java程序，它允许我计算我输入的平均投票数，当我最终输入负数时，程序停止。该程序工作正常，但有一部分程序未显示。

以下是该计划：

 public static void main (String[] args) {

    System.out.println("This program calculate the average of your votes");
    Scanner keyboard = new Scanner(System.in);
    String answer;

    do {
        int sum = 0, myVotes=0;
        System.out.println("Enter your votes and at the end a negative number");
        boolean average = true;

        while(average ) {
            int votes = keyboard.nextInt();
            if (votes >0) {
                sum = sum + votes;
                myVotes++;
            } else if (myVotes>0){
                System.out.println("The average is :" + (sum/myVotes));
            } else  if (votes<0){
                average = false;
            }               
        }
        System.out.println("Do you want to calculate another average : yes or no");
        answer = keyboard.next();
    }while(answer.equalsIgnoreCase("yes"));
}

这是程序未显示的部分：

您想计算另一个平均值：是或否; exc ..

谢谢大家的帮助。

Answer 1

问题在于您的if-else逻辑。移除if (myVotes>0)并将System.out.println("The average is :" + (sum/myVotes));行排除在while(average )循环之外：

以下是更正后的代码段：

do {

    int sum = 0, myVotes=0;

    System.out.println("Enter your votes and at the end a negative number");

    boolean average = true;

    while(average ) {

        int votes = keyboard.nextInt();
        if (votes >0) {
            sum = sum + votes;
            myVotes++;
        } else  if (votes<0){
            average = false;
        } 
    }

    if (myVotes != 0){//To handle divide by 0 exception
            System.out.println("The average is :" + (sum/myVotes));
    }
    System.out.println("Do you want to calculate another average : yes or no");

    answer = keyboard.next();

}while(answer.equalsIgnoreCase("yes"));

java program：计算平均值？

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