[網設]C#筆記

 static void Main(string[] args)
        {
            int n;
            Console.WriteLine("Please input a number\n");
            n = Convert.ToInt32(Console.ReadLine());
            for (int i = 0; i <=n; i++)
            {
                for(int j=n-i;j>0;j--)
                    Console.Write(" ");
                for(int k=0;k<2*i-1;k++)
                    Console.Write("*");
                Console.Write("\n");
            }
            for (int i = n-1; i >= 0; i--)
            {
                for (int j = n - i; j > 0; j--)
                    Console.Write(" ");
                for (int k = 0; k < 2 * i - 1; k++)
                    Console.Write("*");
                Console.Write("\n");
            }