Java 初学者作业

Question

我是 Java 的新手，我正在尝试编写一个程序让用户输入一定数量的整数，然后检索这些整数并将它们打印回来。

这仅在您输入 1 个整数时有效。否则，它终止。

import java.util.Scanner;
public class Assignment4 {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        System.out.println("Enter the Number of Numbers");
        int totalNumbers = scan.nextInt();
        int[] numbers = new int[totalNumbers];
        for(int i = 0;i == (totalNumbers-1); i++){
            System.out.println("Enter the Next Number");
            numbers[i] = scan.nextInt();
        }


        for(int i = 0;i == (totalNumbers-1); i++){
            System.out.println(numbers[i]);
        }

    }
}

Answer 1

你的循环条件是你的问题。它只会接受一个输入。条件:

for(int i = 0; i == (totalNumbers-1); i++){

将在 i != (totalNumbers - 1) 时终止。您的 for 循环应该像下面这样阅读:

Initialize a new variable i to zero, then while i is equal to "totalNumbers - 1", do the following block of code, then increment i by 1

你可能想要:

for(int i = 0; i <= (totalNumbers-1); i++){

可以理解为:

Initialize a new variable i to zero, then while i is LESS THAN or equal to "totalNumbers - 1", do the following block of code, then increment i by 1