java - 需要帮助找到平均值

Question

我似乎无法弄清楚如何根据用户输入的分数来计算平均分数。我也无法让它停止排除大于 100 或小于 0 的输入。有人可以告诉我我做错了什么吗？谢谢。

public static void main(String[] args) {


   Scanner scan = new Scanner(System.in);

   int sum = 0;
   int inputNumber;
   int numberExams;
   float averageScore;
   double max = 0; 
   double min = 101;      


   System.out.println("Enter the total number of exams you want a average");
   numberExams = scan.nextInt();

   System.out.println("Please enter " + numberExams + " numbers:");

   for(int i = 1; i<=numberExams ;i++){          
    inputNumber = scan.nextInt();
    sum = sum + inputNumber;
    System.out.println();

   if(inputNumber > max){
    max = inputNumber;
}
   if(inputNumber < min){
    min = inputNumber;
}
   if(inputNumber > -1 && inputNumber < 101){
    sum = sum + inputNumber;
}
   else{
    System.out.println("You entered a number that wasn't in the range of 0 to 100");
}
} 


    averageScore = sum / numberExams;

System.out.println( "The Max Exam Score is: " + max );
System.out.println( "The Minimum Exam Score is: " + min );    
System.out.println("The Average Exam Score is: " + averageScore );
}
}

Answer 1

您在 for 循环 中执行了两次 sum = sum + inputNumber 操作。

此外，您需要将 int 转换为 double 来计算平均值:

double average = ((double) sum) / numberExams;