class Program { static void Main(string[] args) { while (true) { /*★ ★★ ★★★ ★★★★ ★★★★★ */ /*string s = "★"; int n; Console.WriteLine("请输入一个数："); n = Convert.ToInt32(Console.ReadLine()); for (int i = 1; i <= n; i++) { for (int j = 1; j <=i; j++) { Console.Write(s); } Console.WriteLine(); } */ /*★★★★★ ★★★★ ★★★ ★★ ★ */ /* string s = "★"; int n; Console.WriteLine("请输入一个数："); n = Convert.ToInt32(Console.ReadLine()); for (int i = 1; i <= n; i++) { for (int j = 1; j <=n+1-i; j++) { Console.Write(s); } Console.WriteLine(); } */ /* ★ ★★ ★★★ ★★★★ ★★★★★ */ /* string s = "★"; int n; Console.WriteLine("请输入一个数："); n = Convert.ToInt32(Console.ReadLine()); for (int i = 1; i<=n; i++) { for (int j = 1; j <=(n-i); j++) { Console.Write(" "); } for (int t = 1; t <=i ; t++) { Console.Write(s); } Console.WriteLine(""); } */ /* ★ ★★★ ★★★★★ ★★★★★★★ ★★★★★★★★★ */ /* string s = "★"; int n; Console.WriteLine("请输入一个数："); n = Convert.ToInt32(Console.ReadLine()); for (int i = 1; i <=n; i++) { for (int j = 1; j <=(n-i); j++) { Console.Write(" "); } for (int t = 1; t<=(2*i-1);t++) { Console.Write(s); } Console.WriteLine(); } */ /* ★ ★★ ★★★ ★★★★ ★★★★★ ★★★★ ★★★ ★★ ★ */ /* string s = "★"; int n; Console.WriteLine("请输入一个数："); n = Convert.ToInt32(Console.ReadLine()); for (int i = 1; i <=n; i++) { for (int b = 1; b <=n-i; b++) { Console.Write(" "); } for (int j= 1; j <=i; j++) { Console.Write(s); ; } Console.WriteLine(); } for (int p = 1; p <=n; p++) { for (int o = 1; o <=p; o++) { Console.Write(" "); } for (int k = 1; k <=n-p; k++) { Console.Write(s); } Console.WriteLine(); } Console.WriteLine(); /* ★ ★★★ ★★★★★ ★★★ ★ */ string s = "★"; int n; Console.WriteLine("请输入一个数："); n = Convert.ToInt32(Console.ReadLine()); for (int i = 1; i <=n; i++) { for (int x = 1; x <=n-i; x++) { Console.Write(" "); } for (int y = 1; y <=2*i-1; y++) { Console.Write(s); } Console.WriteLine(); } for (int t = 1; t