C#学习-计算平均值

        static double Average(List<int> list)//计算平均值
        {
            int sum = 0;
            foreach (var i in list)//循环求值
            {
                sum += i;
            }

            return (double)sum / list.Count();
        }
        static void Main(string[] args)
        {
            var list = new List<int>();
            list.Add(5);
            list.Add(6);
            list.Add(9);

            Console.WriteLine(\”平均值等于{0}\”, Average(list));
            Console.ReadLine();
        }