输入一定范围内的数字，然后让系统提示我为输入的那个数字输入姓名？

Question

我正在尝试输入 1-10 之间的数字，如果连续 3 次输入超出此范围的数字，系统将终止。如果号码在范围内，则应提示用户输入姓名，该姓名应与最初添加的号码相匹配。（因此，如果最初输入了 3 个，系统将允许添加 3 个名称）。你能告诉我哪里出错了吗？

import java.util.Scanner;
public class Lab7{
    public static void main(String []args){
        Scanner in = new Scanner(System.in);
        int result;
        int count = 0;
        
       do {
           System.out.println("Enter number of students (Must be between 1-10)");
           result = in.nextInt();
       } while(result < 0 || result > 10);
       {
            
        System.out.println("Thank you, Please enter the names for the "+ result + " Students");
       }
       
      try (Scanner input = new Scanner(System.in)) {
        System.out.print("Enter Full Name: ");
           String s1 = input.next();
           System.out.print("The students name is" + " " + s1);
    }
       
       while(!(result < 0 || result > 10));
       {
        System.out.println("wrong input");

        count = count + 1;
           if (count == 3)
           {
               System.out.println("The maximum number of attempts exceeded");
               System.exit(count);
           }
       }          
       
    }
    
}

Answer 1

您需要将整个代码放在 while 循环中，其条件应取决于不正确尝试的次数 (count)。由于您没有提到如果用户输入正确的输入（比如 3）需要做什么，我假设它将输入 3 个名称并结束（如果您想继续使用名称，请删除提到的中断条件在我的代码中。

public class Lab7 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int result;
        int count = 0;

        while (count < 3) {
            System.out.println("Enter number of students (Must be between 1-10)");
            result = in.nextInt();
            // in.next();
            if (result < 0 || result > 10) {
                count++;
            } else {
                System.out.println("Thank you, Please enter the names for the " + result + " Students");
                int nameCount = 0;
                while (nameCount < result) {

                    System.out.println("Enter Full Name: ");
                    String s1 = in.next();
                    System.out.println("The students name is" + " " + s1);
                    nameCount++;
                }
                break;
            }
        }
    }

}

输出为：

Enter number of students (Must be between 1-10)
2
Thank you, Please enter the names for the 2 Students
Enter Full Name:
john
The students name is john
Enter Full Name:
jacob
The students name is jacob

输入一定范围内的数字，然后让系统提示我为输入的那个数字输入姓名？

Enter a number within a certain range, and then get the system to prompt me to input names for that number that has been entered?

java

arrays

validation