当总和超过100时仍如何执行总和和平均值，如何获取此代码以停止输入？

Question

我已经在这里呆了几个小时了！分配的更新表明，当用户的值超过100时，我们需要停止用户输入。如果不重写整个内容，如何“循环”进行输入？我知道代码很繁琐，但这是分配的要求。我认为我的大脑只是java汤！任何帮助都是极好的
：）

public static void main(String[] args) {
    //Use Main Method for gathering input
    float input = 1;
    // Declare variable for sum
    float theSum = 0;
    // Declare variable for average
    float average = 0;
    // Declare variable for counting the number of user inputs
    int counter = 0;
    /* Initialize the while loop using an input of 0 as a sentinel value
     * to exit the loop*/
    while (input != 0) {
        // Use JOptionPane method to accept input from user
        input = Float.parseFloat(
                JOptionPane.showInputDialog(
                null, "Please enter a number.  Enter 0 to quit: "));
        // Invoke sum method and pass input and summation to sum method
        theSum = (sum(input, theSum));
        // Invoke avg method and pass summation and counter to avg
        average = (avg(theSum, counter));
        // Increment the counter variable
        counter++;
    }
    // Invoke display method and pass summation, average, and counter variables to it
    display(theSum, average, counter);
}
public static float sum(float num1, float sum) {
    //Add the user's input number to the sum variable
    sum += num1;

    //Return value of sum variable as new summation variable
    return sum;
}
public static float avg(float num1, int num2) {
    //Declare and initialize variable for average
    float average = 0;

    //Calculate average
    average = num1 / num2;

    //Return value of average variable
    return average;
}
public static void display(float sum, float average, int counter) {

    /* I am subtracting 1 from variable counter so as not to include the sentinel value
     * of 0 that the user had to enter to exit the input loop in the overall count*/

    // Display the count, sum, and average to the user
    JOptionPane.showMessageDialog(null, "Count = " + (counter - 1) + ", Sum = " + sum + ", Average = " + average);

    // Test to see if sum is greater than 100 and if so, display alert to user
    if (sum > 100) {
        JOptionPane.showMessageDialog(null, "The sum of your numbers is greater than 100!");
    }
}

}

如果我在counter ++之后输入此消息，则用户在第一次输入后会收到此消息…我在做什么错！！！！

if (theSum > 100)
            break;
                JOptionPane.showMessageDialog(null, "The sum of your numbers is greater than 100!");

中断的问题是 “ JOptionPane.showMessageDialog（null，”您的数字总和大于100！“）；”
在中断后立即放置一段代码会导致一些输出问题。现在的麻烦是，> 100的和的平均值正在输出和，而不是平均值。对于总和<= 100 … WTH？！？！:)

现在继承代码：

public static void main(String[] args) {
    //Use Main Method for gathering input
    float input = 1;
    // Declare variable for sum
    float theSum = 0;
    // Declare variable for average
    float average = 0;
    // Declare variable for counting the number of user inputs
    int counter = 0;
    /* Initialize the while loop using an input of 0 as a sentinel value
     * to exit the loop*/
    while (input != 0) {
        // Use JOptionPane method to accept input from user
        input = Float.parseFloat(
                JOptionPane.showInputDialog(
                null, "Please enter a number.  Enter 0 to quit: "));
        // Invoke sum method and pass input and summation to sum method
        theSum = (sum(input, theSum));
        // Invoke avg method and pass summation and counter to avg
        average = (avg(theSum, counter));
        // Increment the counter variable
        counter++;

        if (theSum > 100)
            break;                                
    }
    // Invoke display method and pass summation, average, and counter variables to it
    display(theSum, average, counter);
}
public static float sum(float num1, float sum) {
    //Add the user's input number to the sum variable
    sum += num1;        
    //Return value of sum variable as new summation variable
    return sum;
}
public static float avg(float num1, int num2) {
    //Declare and initialize variable for average
    float average = 0;
    //Calculate average
    average = num1 / num2;
    //Return value of average variable
    return average;
}
public static void display(float sum, float average, int counter) {

    /* I am subtracting 1 from variable counter so as not to include the sentinel value
     * of 0 that the user had to enter to exit the input loop in the overall count*/

    // Display the count, sum, and average to the user
    if (sum >100)
    JOptionPane.showMessageDialog(null, "Count = " + (counter) + ", Sum = " + sum + ", Average = " + average);
    if (sum <= 100)
    JOptionPane.showMessageDialog(null, "Count = " + (counter-1) + ", Sum = " + sum + ", Average = " + average);

    }
}

Answer 1

break在while循环中使用带if条件的语句检查 thesum > 100。希望这些提示能帮助您获得所需的行为。由于您还需要计算平均值，因此将中断逻辑放在avg后面：

     while (input != 0) {
    // Use JOptionPane method to accept input from user
    input = Float.parseFloat(
            JOptionPane.showInputDialog(
            null, "Please enter a number.  Enter 0 to quit: "));
    // Invoke sum method and pass input and summation to sum method
    theSum = (sum(input, theSum));
    // Invoke avg method and pass summation and counter to avg
    average = (avg(theSum, counter));
    // Increment the counter variable
    counter++;
    if (theSum > 100)
      break;
}
// Invoke display method and pass summation, average, and counter variables to it
display(theSum, average, counter);