namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Console.WriteLine("请输入直角三角形的行数"); int num = Convert.ToInt32(Console.ReadLine ()); for (int i = 1; i<=num; i++) { for (int j = 1; j<= 2*i-1; j++) { Console.Write("*"); } Console.WriteLine(); } Console.ReadKey(); } } }
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