面试记录1

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static void Main(string[] args)         {             int j = 0;             Console.WriteLine("++ j =>" + (++j));             //++ j => 1               int s = 0;             Console.WriteLine("s++ =>" + (s++));             //s++ =>0               int k = 0;             Func<int, int> f = (int input) => {                 try                 {                     k = 10 / input;                     k++;                     return k;                 }                 catch (Exception)                 {                     ++k;                     return k;                 }                 finally                 {                     Console.WriteLine("finally,key "+ k +" =>" + (k++) );                 }             };               Console.WriteLine("key 0 =>" + f(0));             Console.WriteLine("key 10 =>" + f(1));             //finally,key 1 =>1             //key 0 =>1             //finally,key 11 =>11             //key 10 =>11                 int index = 0;             List<string> colors = new List<string>() { "red", "yellow", "blue" };             var cdata = colors.Where(c => {                 index++;                 return !c.StartsWith('y');             }).ToList();               Console.WriteLine("index =>" + (index));             Console.WriteLine("cdata Count=>" + (cdata.Count));             Console.WriteLine("index =>" + (index));               //index => 3             //cdata Count=>2             //index => 3