Question

我在高中的编程2课程中，我的老师拒绝教我们并用直接的答案回答问题。（他们都非常模糊）我们总是让项目超越时间，只需要自己照顾自己。我们本周的项目是输入五个数字并使用for循环（非数组）状态，而输入的数字是偶数或奇数。这是我到目前为止的代码，我为＆＃34; for＆＃34;我的朋友在课堂上排队，这可能是代码的问题。（也就是说，当我尝试运行该程序时，它不会退出编译阶段）非常感谢你！

import java.util.*;

public class Project {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int one = scan.nextInt();
        int two = scan.nextInt();
        int three = scan.nextInt();
        int four = scan.nextInt();
        int five = scan.nextInt();

        for (int i = 1; i < 5; i++) {
            if (one < -1) {
                System.out.println("An Error Has Ocurred.");
            } else {
                if (one % 2 == 0) {
                    System.out.println("This is an even number");
                } else {
                    System.out.println("This is an odd number.");
                }
            }
            if (two < -1) {
                System.out.println("An Error Has Ocurred.");
            } else {
                if (two % 2 == 0) {
                    System.out.println("This is an even number");
                } else {
                    System.out.println("This is an odd number.");
                }
            }
            if (three < -1) {
                System.out.println("An Error Has Ocurred.");
            } else {
                if (three % 2 == 0) {
                    System.out.println("This is an even number");
                } else {
                    System.out.println("This is an odd number.");
                }
            }
            if (four < -1) {
                System.out.println("An Error Has Ocurred.");
            } else {
                if (four % 2 == 0) {
                    System.out.println("This is an even number");
                } else {
                    System.out.println("This is an odd number.");
                }
            }
            if (four < -1) {
                System.out.println("An Error Has Ocurred.");
            } else {
                if (four % 2 == 0) {
                    System.out.println("This is an even number");
                } else {
                    System.out.println("This is an odd number.");
                }
            }
            if (five < -1) {
                System.out.println("An Error Has Ocurred.");
            } else {
                if (five % 2 == 0) {
                    System.out.println("This is an even number");
                } else {
                    System.out.println("This is an odd number.");
                }
            }
        }
    }
}

Answer 1

我想你可以尝试一下。 `

import java.util.*;

public class Project {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        for (int i = 0; i < 5; i++) {
            int number = scan.nextInt();
            if ((number & 1) == 0) {
                System.out.println(number + " is Even");
            } else {
                System.out.println(number + " is Odd");
            }
        }
    }
}

输入为10 15 64 68 75

Output:
10 is Even
15 is Odd
64 is Even
68 is Even
75 is Odd

Answer 2

首先，您应该将参数String[] args添加到main method。 java main方法如下所示：public static void main(String args[])。

其次，您不需要使用此代码来执行您想要的操作。您只需要阅读the java doc并让研究人员精神奕奕。

使用For循环将随机数排序为偶数和奇数

2 个答案: