【Visual C#】九九乘法程式設計示範

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 九九乘法表
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int a,b,c; //宣告變數a,b,c
            for (a = 1; a < 10; a++) //進行迴圈，使被乘數範圍為1到9
            {
                for (b = 1; b < 10; b++) //進行迴圈，使乘數範圍為1到9
                {
                    c = a * b; //將變數a乘以變數b可得到變數數c，此為乘法中的商數
                    listBox1.Items.Add(a + " X " + b + " = " + c); //將計算中的被乘數、乘數、商數都能顯示在ListBox中
                }
            }
        }
    }
}