java - 为什么它不允许我只输入 5 个数字，当我运行它时，它允许我输入 6 个数字

Question

import java.util.Scanner;

public class Lab11d
{
    public static void main (String[] args)
    {
        Scanner in = new Scanner(System.in);
        double [] anArray;  // declares an array of integers
        anArray = new double [5];        
        int min=0;       

        //Initalizes the array values//
        System.out.println ("Enter 5 numbers of your choosing"); 

        double a = in.nextDouble();       
        for ( int count=0; count < 5; count++)
        {
            anArray[count] = a;
            a = in.nextDouble();
        }

        //Prints array values//
        for (double value : anArray)
            System.out.println ("Element at index " + (min++) + ":"+ value + "" ); 
    }
}

它可以运行，但我只想输入 5 个数字，不知道我做错了什么。它允许我输入 6 个，限制为 5 个，请问如何更改它

Answer 1

因为你在循环之前得到了一个double。将其更改为类似的内容

// double a = in.nextDouble();       
for (int count=0; count < 5; count++)
{
    double a = in.nextDouble();
    anArray[count] = a;
}

或完全消除a，例如

for (int count=0; count < 5; count++)
{
    anArray[count] = in.nextDouble();
}