倒直角三角形

namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Console.WriteLine("请输入倒直角三角形的行数"); int num = Convert.ToInt32(Console.ReadLine ()); for (int i = 1; i<=num; i++) { for (int j = num; j>= i; j--) { Console.Write("*"); } Console.WriteLine(); } Console.ReadKey(); } } }