using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
 
namespace exp4_2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            //巢狀迴圈
            for(int i=1;i<=9 ;i++ )
            {
                for(int j=1; j<=9;j++ )
                {
                    label1.Text += i + "*" + j + "=" + i * j + "     ";
                }
                label1.Text += '\n';
 
            }
        }
    }
}