求数组的和

using System;

//求一个数组的和
public class SampleClass
{
    public int GetSum(int[] arr)
    {
        int sum = 0;
        if(arr==null)
        {
            sum = 0;
       
        }
        if (arr.Length==1)
        {
            sum=arr[0];
        }

　　else

　　{
        for (int i = 0; i < arr.Length; i++)
        {
            sum = sum + arr[i];
        }
        return sum;

  　　  }

　　}
   public static void Main()
   { 
       int[] arr = {1，2，3};
       SampleClass sc = new SampleClass();
       Console.WriteLine(sc.GetSum(arr));
   }
 }

转载于:https://www.cnblogs.com/Evonne/archive/2010/08/06/1794404.html