打印五角形

            //1、第一部分
                    //※※※※★
                    //※※※★★★
                    for (int i = 1; i <= 2; i++)//s*(2/7)
                    {
                        string a = "";
                        for (int j = 1; j <= 3 - i; j++)
                        {
                            a += "♀";
                        }
                        for (int j = 1; j <= 2 * i - 1; j++)
                        {
                            a += "★";
                        }
                        Console.WriteLine("♀♀" + a);
                    }

                    //2、第二部分
                    //★★★★★★★★★
                    //※★★★★★★★
                    //※※★★★★★
                    for (int i = 3; i <= 5; i++)
                    {
                        string a = "";
                        for (int j = 1; j <= i - 3; j++)
                        {
                            a += "♀";
                        }
                        for (int j = 1; j <= 15 - 2 * i; j++)
                        {
                            a += "★";
                        }
                        Console.WriteLine(a);
                    }

                    //3、第三部分
                    //※※★★※★★※※
                    //※※★※※※★※※
                    for (int i = 6; i <= 7; i++)
                    {
                        string a = "";
                        for (int j = 1; j <= 8 - i; j++)
                        {
                            a += "★";
                        }
                        for (int j = 1; j <= 2 * i - 11; j++)
                        {
                            a += "♀";
                        }
                        for (int j = 1; j <= 8 - i; j++)
                        {
                            a += "★";
                        }
                        Console.WriteLine("♀♀" + a);
                    }
                    Console.ReadKey();