Java 循环错误 - 需要新鲜的眼睛

Question

I am writing a simple craps simulator for Java class and for some reason, it is having trouble running correctly. It is supposed to keep track of losses with "point" and wins with "point" but for some reason, those values tend to be 1 or 0 everytime. The losses and wins on first roll seem to be working. Wondering if someone with a fresh set of eyes can figure out where I messed up. Thank you!

import java.util.Scanner;
import java.util.Random;

class CrapsSimulator {

  public static void main(String[] args) {

    // Set up values we will use
    int lossfirstroll = 0;
    int winfirstroll = 0;
    int losswithpoint = 0;
    int winwithpoint = 0;

    boolean gameover = false;
    int point = 0;

    // Loop through a craps game 100 times
    for (int i = 0; i < 100; i++) {

        // First roll -- random number within 2-12
        Random rand = new Random();
        int random = rand.nextInt(11) + 2;

        // Win on first roll
        if (random == 7 || random == 11) {
            winfirstroll++;
            gameover = true;
        } // Loss on first roll
        else if (random == 2 || random == 3 || random == 12) {
            lossfirstroll++;
            gameover = true;
        } else // Player has "point"
        {
            point = random;
        }

        // Check to make sure the game hasn't ended already
        while (gameover == false) {
            // Reroll the dice
            random = rand.nextInt(11) + 2;

            // Check to see if player has won
            if (random == point) {
                winwithpoint++;
                gameover = true;
            }

            // Or if the player has lost
            if (random == 7) {
                losswithpoint++;
                gameover = true;
            }

            // Otherwise, keep playing
            gameover = false;
        }
    }

    // Output the final statistics
    System.out.println("Final Statistics\n");
    System.out.println("Games played: 100\n");
    System.out.println("Wins on first roll: " + winfirstroll + "\n");
    System.out.println("Losses on first roll: " + lossfirstroll + "\n");
    System.out.println("Wins with point: " + winwithpoint + "\n");
    System.out.println("Losses with point: " + losswithpoint + "\n");
  }
}

Answer 1

either run it through a debugger, or sprinkle System.out.println and see where your logic is failing. Is this homework?

Answer 2

Your problem is the gameover flag. You are always settings it to false again at the end of the inner loop, this will make it run forever.