计算平均年龄

import java.util.Scanner;


public class Demo01 {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("请输入5个人年龄:");
        int man1= sc.nextInt();
        if(man1<0||man1>130){
            System.out.println("报错");

        }else {
            int man2= sc.nextInt();
            if (man2<0||man2>130) {
                System.out.println("报错");
            }else{
                int man3= sc.nextInt();
                if(man3<0||man3>130){
                    System.out.println("报错");
                }else{
                    int man4= sc.nextInt();
                    if(man4<0||man4>130){
                        System.out.println("报错");
                    }else {
                        int man5= sc.nextInt();
                        if(man5<0||man5>130){
                            System.out.println("报错");
                        }else{
                            System.out.println("输入完毕，现在开始分析，请稍等");
                            int average=(man1+man2+man3+man4+man5)/5;
                            System.out.println("五个人平均年龄为："+average);
                        }
                    }
                }
            }
        }







    }


}

这个代码是以五个人为列，