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C#在Windows窗口用“*”打印菱形

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 HomeTest006{
       public partial class Form1 : Form    {
           public Form1()        {
               InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {
               int x = Convert.ToInt32(txtIn.Text);            int y = (x - 1) / 2;            for (int a = 1; a <= y; a++)   //打印菱形前一半            {
                   for (int c = 1; c <= y - a + 1; c++)                {
                       lblOut.Text += Convert.ToString(" ");                }                for (int b = 1; b <= a; b++)                {
                       lblOut.Text += Convert.ToString("* ");                }                lblOut.Text += Convert.ToString("\n");            }            for (int z = 1; z <= y + 1; z++)  //打印中间行            {
                   lblOut.Text += Convert.ToString("* ");            }            lblOut.Text += Convert.ToString("\n");            for (int a1 = y; a1 >= 1; a1--)  //打印菱形后一半            {
                   for (int c1 = 0; c1 <= y - a1; c1++)                {
                       lblOut.Text += Convert.ToString(" ");                }                for (int b1 = 1; b1 <= a1; b1++)                {
                       lblOut.Text += Convert.ToString("* ");                }                lblOut.Text += Convert.ToString("\n");            }        }    }}

运行结果：

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