計算1-100之間的所有奇數的和

求1-100之間所有奇數整數和：

 1  class PRogram 2     { 3         static void Main(string[] args) 4         { 5            int sum= GetOdd(1,100); 6             Console.WriteLine("1-100之間所有奇數整數和{0}",sum); 7             Console.ReadKey(); 8         } 9         /// <summary>10         /// 奇數和11         /// </summary>12         /// <param name="p1"></param>13         /// <param name="p2"></param>14         /// <returns></returns>15         private static int GetOdd(int p1, int p2)16         {17             int sum = 0;18             for (int i = p1; i <= p2; i++)19             {20                 if (i%2!=0)21                 {22                     sum += i;23                 }24             }25             return sum;26         }27     }