import java.util.Scanner;public class ZhouEr {	public static void main(String[] args) {				int [] arr1 = new int[5];		String arr2[] = new String[5];		double [] arr3 = new double[5];				Scanner sca = new Scanner(System.in);				int i ;		int count = 0;		while(true){			System.out.println("=图书管理系统1.0=");			System.out.println("1.添加");			System.out.println("2.修改");			System.out.println("3.删除");			System.out.println("4.查询");			System.out.println("5.退出");			int book = sca.nextInt();			if(book == 1){				System.out.println("添加图书");				System.out.print("--输入图书编号");				arr1[count] = sca.nextInt();				System.out.print("--输入图书名");				arr2[count] = sca.next();				System.out.print("--输入图书价格");				arr3[count] = sca.nextDouble();				System.out.println("成功添加");				count ++;				for(int j = 0;j 
    
     <5;j++){					if(arr1[j]==0){						break;					}					System.out.println("修改后的书库是："+arr1[j]+arr2[j]+arr3[j]);				}							}else if(book == 3){				System.out.println("删除图书");				System.out.print("选择要删除的图书编号：");				int upId = sca.nextInt();				for(int k = 0;k < arr1.length;k ++) {					if(upId == arr1[k]) {						for(int g = k;g < arr1.length-1;g ++) {							arr1[g] = arr1[g + 1];						}					}				}//				arr1[upId-1] = 0;//				arr2[upId-1] = null;//				arr3[upId-1] = 0.0;								for(int j = 0;j <5;j++){					if(arr1[j]==0){						break;					}					System.out.println("删除后的书库是："+arr1[j]+arr2[j]+arr3[j]);				}			}else if(book == 5){				System.out.println("退出系统");				return;			}		}	}}