```
package com.company;
import java.util.Scanner;
/**
@author huxiaomei
@date 2021/3/18 8:30*/public class demo01 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入数字：");
int shuzi = scanner.nextInt();
switch (shuzi){
case 1:
System.out.println("拨打爸爸的号");
break;
case 2 :
System.out.println("拨打妈妈的号");
break;
case 3:
System.out.println("拨打爷爷的号");
break;
case 4:
System.out.println("拨打奶奶的号");
}
}}
```
