c#百元买百鸡Windows窗体应用

                        label1.Text += "公鸡" + a.ToString() + "只，" + "母鸡" + b.ToString（）+"只，" + "小鸡" + c.ToString（）+"只\n\n";

问啥啊？？

你问的问题不够详细，根据你只言片语的描述，设定：

代码：

        /// <summary>
        /// 穷举法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnExhaustive_Click(object sender, EventArgs e)
        {
            StringBuilder stringBuilder = new StringBuilder();
            for (int x = 0; x <= 20; x++)
            {
                for (int y = 0; y <= 33; y++)
                {
                    for (int z = 0; z <= 100; z++)
                    {
                        if ((5 * x + 3 * y + z / 3.0 == 100) && (x + y + z == 100))
                        {
                            stringBuilder.Append(string.Format("公鸡{0}只，母鸡{1}只，小鸡{2}只\n", x, y, z));
                        }
                    }
                }
            }

            lblResult.Text = stringBuilder.ToString();
        }