请帮忙下。。怎么实现 用户输入数字在屏幕上用'#'打印   比如
 ###      ###   
#   #    #   #
#   #    #   #
#   #    #   #
 ###      
#   #    #   #
#   #    #   #
#   #    #   #
 ###      ###
   谢谢啊！！！

判断输入的字符是不是数字，不是输出一个空格，是的话输出一个'#"。

看起来有点长，其实算法很简单，我也期望有高手能写出更简洁的代码：
 static void Main(string[] args)
        {
            int[,] arr0 ={
              {0,1,1,1,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,0,0,0,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,1,1,1,0}
                        };
            int[,] arr1 ={
              {0,0,0,0,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,0}
                        };
            int[,] arr2 ={
               {0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,1,1,1,0},{1,0,0,0,0},{1,0,0,0,0},{1,0,0,0,0},{0,1,1,1,0}
                        };
            int[,] arr3 ={
               {0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,1,1,1,0}
                        };
            int[,] arr4 ={
               {0,0,0,0,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,0}
                        };
            int[,] arr5 ={
               {0,1,1,1,0},{1,0,0,0,0},{1,0,0,0,0},{1,0,0,0,0},{0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,1,1,1,0}
                        };
            int[,] arr6 ={
               {0,1,1,1,0},{1,0,0,0,0},{1,0,0,0,0},{1,0,0,0,0},{0,1,1,1,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,1,1,1,0}
                        };
            int[,] arr7 ={
               {0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,0}
                        };
            int[,] arr8 ={
               {0,1,1,1,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,1,1,1,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,1,1,1,0}
                        };
            int[,] arr9 ={
              {0,1,1,1,0},{1,0,0,0,1},{1,0,0,0,1},{1,0,0,0,1},{0,1,1,1,0},{0,0,0,0,1},{0,0,0,0,1},{0,0,0,0,1},{0,1,1,1,0}
                        };
           string value= Console.ReadLine();
           for (int m=0; m < 9;m++ )
           {
               for (int i =0; i < value.Length; i++)
               {
                   switch (value[i])
                   {
                       case '0':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr0[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '1':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr1[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '2':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr2[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '3':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr3[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '4':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr4[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '5':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr5[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '6':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr6[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '7':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr7[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '8':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr8[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                       case '9':
                           for (int k = 0; k < 5; k++)
                           {
                               if (arr9[m,k] == 1)
                                   Console.Write("#");
                               else
                                   Console.Write(" ");
                           }
                           Console.Write("\t");
                           break;
                   }
               }
               Console.Write("\r\n");
           }
}

楼上的很认真！

很感谢！！！！！

很感谢！！！！！

楼上厉害，不过我基础差一些，没看懂
比如，string value= Console.ReadLine();
这是一个字符串的声明和赋值，可是下边 使用了  value[i]  这个我就不理解了，如果是String类的话（今天刚学习），书上倒是说可以了（不过我很纠结），但是这个我就无语了，一个字符串可以当作数组用么？ 求教~！

好像string也是特殊的数组吧。。。记不清了。不过，3楼确实有够认真的