Question

我使用Java编写一个简单的游戏代码。我正在使用一个开关，并希望重新使用计算完成后获得的值，并再次显示菜单供用户选择，前提是用户再次选择相同的选项。这是存储前一个值并使用它而不是初始值来进行计算。游戏结束时，＃phystrength＆＃34;变量等于0.

这是我编写的代码的一部分：

import java.util.Scanner; 公共课hw3 {

public static void main(String []args) {
        class physician {

        int phystrength;
        int restoring;
        String available; 

    }       


    physician med = new physician ();

    med.phystrength=100;
    med.restoring=30;
    med.available="busy";

    class surgeon {

        int phystrength;
        int restoring;
        String available; 

    }       


    surgeon med1 = new surgeon ();

    med1.phystrength=100;
    med1.restoring=25;
    med1.available="busy";


    class nurses {

        int phystrength;
        int restoring;
        String available; 


    }       


    nurses med2 = new nurses ();

    med2.phystrength=90;
    med2.restoring=20;
    med2.available="busy";


    class anesthesia {

        int phystrength;
        int restoring;
        String  available; 


    }       


    anesthesia med3 = new anesthesia ();

    med3.phystrength=100;
    med3.restoring=30;
    med3.available="busy";


    //Declaring variables 
    int strength, strength1,strength2=0 ; 
    int numsurgeons=3;
    int numphysician= 3;
    int numnurses=10;
    int numanesthesia=2;
    int remsurgeons,remphysician,remnurses,remanesthesia=0;


Scanner scan = new Scanner (System.in); //Creating a Scanner object to read use input 

System.out.println("Welcome to National Cheng Kung University (NCKU) Hospital");

System.out.println();

System.out.println("Here is the list of current available medical staff at NCKU hospital");

System.out.println();

System.out.println("\nAvaialable personnel are (including their physical strength):"
                    +"\n\t 3 Surgeons -> " + med1.phystrength
                    + "\n\t 3 Physicians -> " + med.phystrength 
                    +"\n\t 10 Nurses -> " + med2.phystrength
                    + "\n\t 2 anesthesiologists -> " + med3.phystrength);

System.out.println("Please enter the NUMBER of the type of medical treatment you are in need of");

String selec;

while (true) { //Allows user to continue to choose from the menu 

    System.out.println ("\nPlease choose from the menu below:" 

                    + "\n\t Medical Treatment-0"
                    + "\n\t Dressing Wrap-1"
                    + "\n\t Surgery-2"
                    + "\n\t Chemotherapy-3"
                    + "\n\t Emergency-Surgery-4"
                    + "\n\t First Aid-5"
                    + "\n\t End Program-6");

selec = scan.next();

switch (selec)
{
case "0":

    System.out.println("You have chosen Medical Treatment (General)");
strength = med.phystrength-20;
strength1=med2.phystrength-10;
remphysician=numphysician-1;
remnurses=numnurses-1;

if (strength <100){
    System.out.println("Physician is: " + med.available);
}

System.out.println("Physician's current Physical strength is:" + strength);

System.out.println("Nurse's current physical strength is:"+ strength1);

System.out.println("Number of remaining Physicians is " + remphysician +" and number of remaining nurses is " + remnurses);
    break;

Answer 1

首先，这很糟糕，

 class physician {
    int phystrength;
    int restoring;
    String available; 
}   

class surgeon {
    int phystrength;
    int restoring;
    String available; 
}

这些是完全相同的对象，因此您不创建新类，而是创建一个类的new个实例。

所以，只有其中一个。

class Medic {
    public int phystrength, restoring;
    boolean isAvailable; // true/false makes more sense than "busy" / "available"

    public Medic (int strength, int restoring, boolean available) {
        this.phystrength = strength;
        this.restoring = restoring;
        this.isAvailable = available;
    }
}

其中很多。

Medic physician = new Medic(100, 30, false);
Medic surgeon = new Medic(100, 25, false);
// ... etc.

现在，就switch语句而言，尝试扫描整数，因为这是你提示的内容。

selec = scan.nextInt();
scan.nextLine(); // clear the newline

switch (selec) {
case 0:  // Case on integers, instead
    System.out.println("You have chosen Medical Treatment (General)");

如果您想修改“员工”的状态，您实际上需要直接更改其状态，而不是存储单独的变量。

physician.phystrength -= 20;
nurse.phystrength -= 10; // "x -= y" --> "x = x - y"
remphysician=numphysician-1;
remnurses=numnurses-1;

在开关/案例中重用可变存储值

1 个答案: