Question

我正在尝试制作一个乐透的java程序。我提示用户输入他们的号码，然后生成一个随机数，如果你的号码匹配，你就赢了，但我得到的是“类型不匹配：无法从int转换为布尔值”。这是我到目前为止所拥有的。感谢您的帮助！ 注意我是java的新手

import java.util.Scanner;
import java.util.Random;
public class lottery
{
  public static void main (String [] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.println("Please enter your number");
    Random randomNumber=new Random();
    System.out.println(" my random number is "+65);
    System.out.println("lotto number is "+randomNumber.nextInt(10)+1);
    if(65)
      System.out.println("You win 20000");
    else 
      Sytem.out.println("No winner");
    if(56)
      System.out.println("You win 10000");
    else
      System.out.println("No winner");
    if(6||5)
      System.out.println("You win 5000");
    else
      System.out.println("No winner");

  }
}

Answer 1

您需要将随机数存储在变量中并在if语句中进行比较：

import java.util.Scanner;
import java.util.Random;
public class lottery
{
  public static void main (String [] args)
  {
    Scanner input=new Scanner(System.in);
    System.out.println("Please enter your number");
    Random randomNumber=new Random();
    int rand = randomNumber.nextInt(10) + 1
    System.out.println(" my random number is "+65);
    System.out.println("lotto number is "+ rand);
    if(rand == 65)
      System.out.println("You win 20000");
    else if(rand == 56)
      System.out.println("You win 10000");
    else if(rand == 6 || rand == 5)
      System.out.println("You win 5000");
    else
      System.out.println("No winner");
  }
}

注意：我还修改了你的if语句。（如果你得到56，你仍然是胜利者）

type mismatch：在lotto程序中无法从int转换为boolean

1 个答案: