using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace Bai3

{

    class Program

    {

        static void Main(string[] args)

        {

      // khai bao bien va cap phat do dai cho mang

      int ispt = nhapsonguyen();

      int [] arrA = new int [ispt];

      //goi ham  nhap va xuat mang 

      xuatmang(arrA);

      nhapmang(arrA);

     }

     // ham nap so Nguyen 

     static int nhapsonguyen()

     {

     int IN= 0 ;

     do

     {

       Console.Write(" nap so Nguyen duong =");

      int.TryParse(Console.ReadLine(),out IN);

     } while ( IN< 1||IN>100);

     return IN; 

     }

     // ham xuat mang

     static void xuatmang ( int[] arrA)

     {

       for( int i = 0;i<arrA.Length;i++)

       {

         Console.Write("{0}\t ",arrA[i]);

         }

       }

     //ham nhập mang

     static void  nhapmang ( int [] arrA)

     {

       for( int i =0;i<arrA.Length;i++)

       {

       Console.Write(" nhap arrA");

       int.TryParse(Console.ReadLine(),out arrA[i]);

      }

     }

   }

 }